{"id":3510,"date":"2018-01-26T18:16:53","date_gmt":"2018-01-26T10:16:53","guid":{"rendered":"http:\/\/gaigaiming.com\/?p=3510"},"modified":"2018-01-26T18:16:53","modified_gmt":"2018-01-26T10:16:53","slug":"%e6%80%bb%e7%bb%93%e4%bc%aa%e7%b1%bb%e4%b8%8e%e4%bc%aa%e5%85%83%e7%b4%a0","status":"publish","type":"post","link":"https:\/\/www.gaigaiming.com\/index.php\/2018\/01\/26\/%e6%80%bb%e7%bb%93%e4%bc%aa%e7%b1%bb%e4%b8%8e%e4%bc%aa%e5%85%83%e7%b4%a0\/","title":{"rendered":"\u603b\u7ed3\u4f2a\u7c7b\u4e0e\u4f2a\u5143\u7d20"},"content":{"rendered":"
\n
\n

\u719f\u6089\u524d\u7aef\u7684\u4eba\u90fd\u4f1a\u542c\u8fc7css\u7684\u4f2a\u7c7b\u4e0e\u4f2a\u5143\u7d20\uff0c\u7136\u800c\u5927\u591a\u6570\u7684\u4eba\u90fd\u4f1a\u5c06\u8fd9\u4e24\u8005\u6df7\u6dc6\u3002\u672c\u6587\u4ece\u89e3\u6790\u4f2a\u7c7b\u4e0e\u4f2a\u5143\u7d20\u7684\u542b\u4e49\u51fa\u53d1\uff0c\u533a\u5206\u8fd9\u4e24\u8005\u7684\u533a\u522b\uff0c\u5e76\u4e14\u5217\u51fa\u5927\u90e8\u5206\u4f2a\u7c7b\u4e0e\u4f2a\u5143\u7d20\u7684\u5177\u4f53\u7528\u6cd5\uff0c\u5373\u4f7f\u4f60\u6709\u7528\u8fc7\u4f2a\u7c7b\u4e0e\u4f2a\u5143\u7d20\uff0c\u4f46\u91cc\u9762\u603b\u6709\u4e00\u4e24\u4e2a\u4f60\u6ca1\u89c1\u8fc7\u7684\u5427\u3002<\/p>\n

1.\u4f2a\u7c7b\u4e0e\u4f2a\u5143\u7d20<\/strong><\/p>\n

\u5148\u8bf4\u4e00\u8bf4\u4e3a\u4ec0\u4e48css\u8981\u5f15\u5165\u4f2a\u5143\u7d20\u548c\u4f2a\u7c7b\uff0c\u4ee5\u4e0b\u662fcss2.1 Selectors\u7ae0\u8282\u4e2d\u5bf9\u4f2a\u7c7b\u4e0e\u4f2a\u5143\u7d20\u7684\u63cf\u8ff0<\/a>\uff1a<\/p>\n

CSS introduces the concepts of pseudo-elements and pseudo-classes  to permit formatting based on information that lies outside the document tree.<\/em><\/p>\n

 <\/p>\n

\u76f4\u8bd1\u8fc7\u6765\u5c31\u662f\uff1acss\u5f15\u5165\u4f2a\u7c7b\u548c\u4f2a\u5143\u7d20\u6982\u5ff5\u662f\u4e3a\u4e86\u683c\u5f0f\u5316\u6587\u6863\u6811\u4ee5\u5916\u7684\u4fe1\u606f\u3002\u4e5f\u5c31\u662f\u8bf4\uff0c\u4f2a\u7c7b\u548c\u4f2a\u5143\u7d20\u662f\u7528\u6765\u4fee\u9970\u4e0d\u5728\u6587\u6863\u6811\u4e2d\u7684\u90e8\u5206\uff0c\u6bd4\u5982\uff0c\u4e00\u53e5\u8bdd\u4e2d\u7684\u7b2c\u4e00\u4e2a\u5b57\u6bcd\uff0c\u6216\u8005\u662f\u5217\u8868\u4e2d\u7684\u7b2c\u4e00\u4e2a\u5143\u7d20\u3002\u4e0b\u9762\u5206\u522b\u5bf9\u4f2a\u7c7b\u548c\u4f2a\u5143\u7d20\u8fdb\u884c\u89e3\u91ca\uff1a<\/p>\n

\u4f2a\u7c7b\u7528\u4e8e\u5f53\u5df2\u6709\u5143\u7d20\u5904\u4e8e\u7684\u67d0\u4e2a\u72b6\u6001\u65f6\uff0c\u4e3a\u5176\u6dfb\u52a0\u5bf9\u5e94\u7684\u6837\u5f0f\uff0c\u8fd9\u4e2a\u72b6\u6001\u662f\u6839\u636e\u7528\u6237\u884c\u4e3a\u800c\u52a8\u6001\u53d8\u5316\u7684\u3002\u6bd4\u5982\u8bf4\uff0c\u5f53\u7528\u6237\u60ac\u505c\u5728\u6307\u5b9a\u7684\u5143\u7d20\u65f6\uff0c\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7:hover\u6765\u63cf\u8ff0\u8fd9\u4e2a\u5143\u7d20\u7684\u72b6\u6001\u3002\u867d\u7136\u5b83\u548c\u666e\u901a\u7684css\u7c7b\u76f8\u4f3c\uff0c\u53ef\u4ee5\u4e3a\u5df2\u6709\u7684\u5143\u7d20\u6dfb\u52a0\u6837\u5f0f\uff0c\u4f46\u662f\u5b83\u53ea\u6709\u5904\u4e8edom\u6811\u65e0\u6cd5\u63cf\u8ff0\u7684\u72b6\u6001\u4e0b\u624d\u80fd\u4e3a\u5143\u7d20\u6dfb\u52a0\u6837\u5f0f\uff0c\u6240\u4ee5\u5c06\u5176\u79f0\u4e3a\u4f2a\u7c7b\u3002<\/p>\n

\u4f2a\u5143\u7d20\u7528\u4e8e\u521b\u5efa\u4e00\u4e9b\u4e0d\u5728\u6587\u6863\u6811\u4e2d\u7684\u5143\u7d20\uff0c\u5e76\u4e3a\u5176\u6dfb\u52a0\u6837\u5f0f\u3002\u6bd4\u5982\u8bf4\uff0c\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7:before\u6765\u5728\u4e00\u4e2a\u5143\u7d20\u524d\u589e\u52a0\u4e00\u4e9b\u6587\u672c\uff0c\u5e76\u4e3a\u8fd9\u4e9b\u6587\u672c\u6dfb\u52a0\u6837\u5f0f\u3002\u867d\u7136\u7528\u6237\u53ef\u4ee5\u770b\u5230\u8fd9\u4e9b\u6587\u672c\uff0c\u4f46\u662f\u8fd9\u4e9b\u6587\u672c\u5b9e\u9645\u4e0a\u4e0d\u5728\u6587\u6863\u6811\u4e2d\u3002<\/p>\n

 <\/p>\n

2.\u4f2a\u7c7b\u4e0e\u4f2a\u5143\u7d20\u7684\u533a\u522b<\/strong><\/p>\n

\u8fd9\u91cc\u901a\u8fc7\u4e24\u4e2a\u4f8b\u5b50\u6765\u8bf4\u660e\u4e24\u8005\u7684\u533a\u522b\u3002<\/p>\n

\u4e0b\u9762\u662f\u4e00\u4e2a\u7b80\u5355\u7684html\u5217\u8868\u7247\u6bb5\uff1a<\/p>\n

\n
 <\/div>\n
\n\n\n\n
\n
\n
1<\/div>\n
2<\/div>\n
3<\/div>\n
4<\/div>\n<\/div>\n<\/td>\n
\n
\n
<<\/span>ul<\/span>><\/span><\/div>\n
    <\/span><<\/span>li<\/span>><\/span>\u6211\u662f\u7b2c\u4e00\u4e2a<<\/span>\/<\/span>li<\/span>><\/span><\/div>\n
    <\/span><<\/span>li<\/span>><\/span>\u6211\u662f\u7b2c\u4e8c\u4e2a<<\/span>\/<\/span>li<\/span>><\/span><\/div>\n
<<\/span>\/<\/span>ul<\/span>><\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

\u5982\u679c\u60f3\u8981\u7ed9\u7b2c\u4e00\u9879\u6dfb\u52a0\u6837\u5f0f\uff0c\u53ef\u4ee5\u5728\u4e3a\u7b2c\u4e00\u4e2a<li>\u6dfb\u52a0\u4e00\u4e2a\u7c7b\uff0c\u5e76\u5728\u8be5\u7c7b\u4e2d\u5b9a\u4e49\u5bf9\u5e94\u6837\u5f0f\uff1a<\/p>\n

HTML:<\/strong><\/p>\n

\n
 <\/div>\n
\n\n\n\n
\n
\n
1<\/div>\n
2<\/div>\n
3<\/div>\n
4<\/div>\n<\/div>\n<\/td>\n
\n
\n
<<\/span>ul<\/span>><\/span><\/div>\n
    <\/span><<\/span>li <\/span>class<\/span>=<\/span>“first-item”<\/span>><\/span>\u6211\u662f\u7b2c\u4e00\u4e2a<<\/span>\/<\/span>li<\/span>><\/span><\/div>\n
    <\/span><<\/span>li<\/span>><\/span>\u6211\u662f\u7b2c\u4e8c\u4e2a<<\/span>\/<\/span>li<\/span>><\/span><\/div>\n
<<\/span>\/<\/span>ul<\/span>><\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

CSS:<\/strong><\/p>\n

\n
 <\/div>\n
\n\n\n\n
\n
\n
1<\/div>\n
2<\/div>\n
3<\/div>\n<\/div>\n<\/td>\n
\n
\n
li<\/span>.<\/span>first<\/span>–<\/span>item<\/span> {<\/span><\/div>\n
    <\/span>color<\/span>:<\/span> orange<\/span><\/div>\n
}<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

\u5982\u679c\u4e0d\u7528\u6dfb\u52a0\u7c7b\u7684\u65b9\u6cd5\uff0c\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u7ed9\u8bbe\u7f6e\u7b2c\u4e00\u4e2a<li>\u7684:first-child\u4f2a\u7c7b\u6765\u4e3a\u5176\u6dfb\u52a0\u6837\u5f0f\u3002\u8fd9\u4e2a\u65f6\u5019\uff0c\u88ab\u4fee\u9970\u7684<li>\u5143\u7d20\u4f9d\u7136\u5904\u4e8e\u6587\u6863\u6811\u4e2d\u3002<\/p>\n

HTML:<\/strong><\/p>\n

\n
 <\/div>\n
\n\n\n\n
\n
\n
1<\/div>\n
2<\/div>\n
3<\/div>\n
4<\/div>\n<\/div>\n<\/td>\n
\n
\n
<<\/span>ul<\/span>><\/span><\/div>\n
    <\/span><<\/span>li<\/span>><\/span>\u6211\u662f\u7b2c\u4e00\u4e2a<<\/span>\/<\/span>li<\/span>><\/span><\/div>\n
    <\/span><<\/span>li<\/span>><\/span>\u6211\u662f\u7b2c\u4e8c\u4e2a<<\/span>\/<\/span>li<\/span>><\/span><\/div>\n
<<\/span>\/<\/span>ul<\/span>><\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

CSS:<\/strong><\/p>\n

\n
 <\/div>\n
\n\n\n\n
\n
\n
1<\/div>\n
2<\/div>\n
3<\/div>\n<\/div>\n<\/td>\n
\n
\n
li<\/span>:<\/span>first<\/span>–<\/span>child<\/span> {<\/span><\/div>\n
    <\/span>color<\/span>:<\/span> orange<\/span><\/div>\n
}<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

\u4e0b\u9762\u662f\u53e6\u4e00\u4e2a\u7b80\u5355\u7684html\u6bb5\u843d\u7247\u6bb5\uff1a<\/p>\n

\n
 <\/div>\n
\n\n\n\n
\n
\n
1<\/div>\n<\/div>\n<\/td>\n
\n
\n
<<\/span>p<\/span>><\/span>Hello <\/span>World<\/span>,<\/span> and<\/span> wish <\/span>you <\/span>have<\/span> a<\/span> good <\/span>day<\/span>!<\/span><<\/span>\/<\/span>p<\/span>><\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

\u5982\u679c\u60f3\u8981\u7ed9\u8be5\u6bb5\u843d\u7684\u7b2c\u4e00\u4e2a\u5b57\u6bcd\u6dfb\u52a0\u6837\u5f0f\uff0c\u53ef\u4ee5\u5728\u7b2c\u4e00\u4e2a\u5b57\u6bcd\u4e2d\u5305\u88f9\u4e00\u4e2a<span>\u5143\u7d20\uff0c\u5e76\u8bbe\u7f6e\u8be5span\u5143\u7d20\u7684\u6837\u5f0f\uff1a<\/p>\n

HTML:<\/strong><\/p>\n

\n
 <\/div>\n
\n\n\n\n
\n
\n
1<\/div>\n<\/div>\n<\/td>\n
\n
\n
<<\/span>p<\/span>><\/span><<\/span>span <\/span>class<\/span>=<\/span>“first”<\/span>><\/span>H<\/span><<\/span>\/<\/span>span<\/span>><\/span>ello <\/span>World<\/span>,<\/span> and<\/span> wish <\/span>you <\/span>have<\/span> a<\/span> good <\/span>day<\/span>!<\/span><<\/span>\/<\/span>p<\/span>><\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

CSS:<\/strong><\/p>\n

\n
 <\/div>\n
\n\n\n\n
\n
\n
1<\/div>\n
2<\/div>\n
3<\/div>\n<\/div>\n<\/td>\n
\n
\n
.<\/span>first<\/span> {<\/span><\/div>\n
    <\/span>font<\/span>–<\/span>size<\/span>:<\/span> 5em<\/span>;<\/span><\/div>\n
}<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

\u5982\u679c\u4e0d\u521b\u5efa\u4e00\u4e2a<span>\u5143\u7d20\uff0c\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u8bbe\u7f6e<p>\u7684:first-letter\u4f2a\u5143\u7d20\u6765\u4e3a\u5176\u6dfb\u52a0\u6837\u5f0f\u3002\u8fd9\u4e2a\u65f6\u5019\uff0c\u770b\u8d77\u6765\u597d\u50cf\u662f\u521b\u5efa\u4e86\u4e00\u4e2a\u865a\u62df\u7684<span>\u5143\u7d20\u5e76\u6dfb\u52a0\u4e86\u6837\u5f0f\uff0c\u4f46\u5b9e\u9645\u4e0a\u6587\u6863\u6811\u4e2d\u5e76\u4e0d\u5b58\u5728\u8fd9\u4e2a<span>\u5143\u7d20\u3002<\/p>\n

HTML:<\/strong><\/p>\n

\n
 <\/div>\n
\n\n\n\n
\n
\n
1<\/div>\n<\/div>\n<\/td>\n
\n
\n
<<\/span>p<\/span>><\/span>Hello <\/span>World<\/span>,<\/span> and<\/span> wish <\/span>you <\/span>have<\/span> a<\/span> good <\/span>day<\/span>!<\/span><<\/span>\/<\/span>p<\/span>><\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

CSS:<\/strong><\/p>\n

\n
 <\/div>\n
\n\n\n\n
\n
\n
1<\/div>\n
2<\/div>\n
3<\/div>\n<\/div>\n<\/td>\n
\n
\n
p<\/span>:<\/span>first<\/span>–<\/span>letter<\/span> {<\/span><\/div>\n
    <\/span>font<\/span>–<\/span>size<\/span>:<\/span> 5em<\/span>;<\/span><\/div>\n
}<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

 <\/p>\n

\u4ece\u4e0a\u8ff0\u4f8b\u5b50\u4e2d\u53ef\u4ee5\u770b\u51fa\uff0c\u4f2a\u7c7b\u7684\u64cd\u4f5c\u5bf9\u8c61\u662f\u6587\u6863\u6811\u4e2d\u5df2\u6709\u7684\u5143\u7d20\uff0c\u800c\u4f2a\u5143\u7d20\u5219\u521b\u5efa\u4e86\u4e00\u4e2a\u6587\u6863\u6570\u5916\u7684\u5143\u7d20\u3002\u56e0\u6b64\uff0c\u4f2a\u7c7b\u4e0e\u4f2a\u5143\u7d20\u7684\u533a\u522b\u5728\u4e8e\uff1a\u6709\u6ca1\u6709\u521b\u5efa\u4e00\u4e2a\u6587\u6863\u6811\u4e4b\u5916\u7684\u5143\u7d20\u3002<\/p>\n

 <\/p>\n

3.\u4f2a\u5143\u7d20\u662f\u4f7f\u7528\u5355\u5192\u53f7\u8fd8\u662f\u53cc\u5192\u53f7\uff1f<\/strong><\/p>\n

CSS3\u89c4\u8303\u4e2d\u7684\u8981\u6c42\u4f7f\u7528\u53cc\u5192\u53f7(::)\u8868\u793a\u4f2a\u5143\u7d20\uff0c\u4ee5\u6b64\u6765\u533a\u5206\u4f2a\u5143\u7d20\u548c\u4f2a\u7c7b\uff0c\u6bd4\u5982::before\u548c::after\u7b49\u4f2a\u5143\u7d20\u4f7f\u7528\u53cc\u5192\u53f7(::)\uff0c:hover\u548c:active\u7b49\u4f2a\u7c7b\u4f7f\u7528\u5355\u5192\u53f7(:)\u3002\u9664\u4e86\u4e00\u4e9b\u4f4e\u4e8eIE8\u7248\u672c\u7684\u6d4f\u89c8\u5668\u5916\uff0c\u5927\u90e8\u5206\u6d4f\u89c8\u5668\u90fd\u652f\u6301\u4f2a\u5143\u7d20\u7684\u53cc\u5192\u53f7(::)\u8868\u793a\u65b9\u6cd5\u3002<\/p>\n

\u7136\u800c\uff0c\u9664\u4e86\u5c11\u90e8\u5206\u4f2a\u5143\u7d20\uff0c\u5982::backdrop\u5fc5\u987b\u4f7f\u7528\u53cc\u5192\u53f7\uff0c\u5927\u90e8\u5206\u4f2a\u5143\u7d20\u90fd\u652f\u6301\u5355\u5192\u53f7\u548c\u53cc\u5192\u53f7\u7684\u5199\u6cd5\uff0c\u6bd4\u5982::after\uff0c\u5199\u6210:after\u4e5f\u53ef\u4ee5\u6b63\u786e\u8fd0\u884c\u3002<\/p>\n

\u5bf9\u4e8e\u4f2a\u5143\u7d20\u662f\u4f7f\u7528\u5355\u5192\u53f7\u8fd8\u662f\u53cc\u5192\u53f7\u7684\u95ee\u9898<\/a>\uff0cw3c\u6807\u51c6\u4e2d\u7684\u63cf\u8ff0\u5982\u4e0b\uff1a<\/p>\n

Please note that the new CSS3 way of writing pseudo-elements is to use a double colon, eg a::after { \u2026 }, to set them apart from pseudo-classes. You may see this sometimes in CSS. CSS3 however also still allows for single colon pseudo-elements, for the sake of backwards compatibility, and we would advise that you stick with this syntax for the time being.<\/em><\/p>\n

\u5927\u6982\u7684\u610f\u601d\u5c31\u662f\uff1a\u867d\u7136CSS3\u6807\u51c6\u8981\u6c42\u4f2a\u5143\u7d20\u4f7f\u7528\u53cc\u5192\u53f7\u7684\u5199\u6cd5\uff0c\u4f46\u4e5f\u4f9d\u7136\u652f\u6301\u5355\u5192\u53f7\u7684\u5199\u6cd5\u3002\u4e3a\u4e86\u5411\u540e\u517c\u5bb9\uff0c\u6211\u4eec\u5efa\u8bae\u4f60\u5728\u76ee\u524d\u8fd8\u662f\u4f7f\u7528\u5355\u5192\u53f7\u7684\u5199\u6cd5\u3002<\/p>\n

\u5b9e\u9645\u4e0a\uff0c\u4f2a\u5143\u7d20\u4f7f\u7528\u5355\u5192\u53f7\u8fd8\u662f\u53cc\u5192\u53f7\u5f88\u96be\u8bf4\u5f97\u6e05\u8c01\u5bf9\u8c01\u9519\uff0c\u4f60\u53ef\u4ee5\u6309\u7167\u4e2a\u4eba\u7684\u559c\u597d\u6765\u9009\u62e9\u67d0\u4e00\u79cd\u5199\u6cd5\u3002<\/p>\n

 <\/p>\n

4.\u4f2a\u7c7b\u4e0e\u4f2a\u5143\u7d20\u7684\u5177\u4f53\u7528\u6cd5<\/strong><\/p>\n

\u8fd9\u4e00\u7ae0\u4ee5\u542b\u4e49\u89e3\u6790\u548c\u4f8b\u5b50\u7684\u65b9\u5f0f\u5217\u51fa\u5927\u90e8\u5206\u7684\u4f2a\u7c7b\u548c\u4f2a\u5143\u7d20\u7684\u5177\u4f53\u7528\u6cd5\u3002\u4e0b\u9762\u662f\u6839\u636e\u7528\u9014\u5206\u7c7b\u7684\u4f2a\u7c7b\u603b\u7ed3\u56fe\u548c\u6839\u636e\u5192\u53f7\u5206\u7c7b\u7684\u4f2a\u5143\u7d20\u603b\u7ed3\u56fe\uff1a<\/p>\n

\"\u4f2a\u7c7b\"<\/a><\/p>\n

\"\u4f2a\u5143\u7d20\"<\/a><\/p>\n

\u67d0\u4e9b\u4f2a\u7c7b\u6216\u4f2a\u5143\u7d20\u4ecd\u7136\u5904\u4e8e\u8bd5\u9a8c\u9636\u6bb5\uff0c\u5728\u4f7f\u7528\u524d\u5efa\u8bae\u5148\u5728Can I Use<\/a>\u7b49\u7f51\u7ad9\u67e5\u4e00\u67e5\u5176\u6d4f\u89c8\u5668\u517c\u5bb9\u6027\u3002\u5904\u4e8e\u8bd5\u9a8c\u9636\u6bb5\u7684\u4f2a\u7c7b\u6216\u4f2a\u5143\u7d20\u4f1a\u5728\u6807\u9898\u4e2d\u6807\u6ce8\u3002<\/p>\n

 <\/p>\n

\u4f2a\u7c7b<\/strong><\/p>\n

\u72b6\u6001<\/strong><\/p>\n

\u7531\u4e8e\u72b6\u6001\u4f2a\u7c7b\u7684\u7528\u6cd5\u5927\u5bb6\u90fd\u5341\u5206\u719f\u6089\uff0c\u8fd9\u91cc\u5c31\u4e0d\u7528\u4f8b\u5b50\u8bf4\u660e\u4e86\u3002<\/p>\n

1 :link<\/strong><\/p>\n

\u9009\u62e9\u672a\u8bbf\u95ee\u7684\u94fe\u63a5<\/p>\n

2 :visited<\/strong><\/p>\n

\u9009\u62e9\u5df2\u8bbf\u95ee\u7684\u94fe\u63a5<\/p>\n

3 :hover<\/strong><\/p>\n

\u9009\u62e9\u9f20\u6807\u6307\u9488\u6d6e\u52a8\u5728\u5176\u4e0a\u7684\u5143\u7d20<\/p>\n

4 :active<\/strong><\/p>\n

\u9009\u62e9\u6d3b\u52a8\u7684\u94fe\u63a5<\/p>\n

5 :focus<\/strong><\/p>\n

\u9009\u62e9\u83b7\u53d6\u7126\u70b9\u7684\u8f93\u5165\u5b57\u6bb5<\/p>\n

 <\/p>\n

\u7ed3\u6784\u5316<\/strong><\/p>\n

1 :not<\/strong><\/p>\n

\u4e00\u4e2a\u5426\u5b9a\u4f2a\u7c7b\uff0c\u7528\u4e8e\u5339\u914d\u4e0d\u7b26\u5408\u53c2\u6570\u9009\u62e9\u5668\u7684\u5143\u7d20\u3002<\/p>\n

\u5982\u4e0b\u4f8b\uff0c\u9664\u4e86\u7b2c\u4e00\u4e2a<li>\u5143\u7d20\u5916\uff0c\u5176\u4ed6<li>\u5143\u7d20\u7684\u6587\u672c\u90fd\u4f1a\u53d8\u4e3a\u6a59\u8272\u3002<\/p>\n

HTML:<\/strong><\/p>\n

\n
 <\/div>\n
\n\n\n\n
\n
\n
1<\/div>\n
2<\/div>\n
3<\/div>\n
4<\/div>\n
5<\/div>\n
6<\/div>\n<\/div>\n<\/td>\n
\n
\n
<<\/span>ul<\/span>><\/span><\/div>\n
    <\/span><<\/span>li <\/span>class<\/span>=<\/span>“first-item”<\/span>><\/span>\u4e00\u4e9b\u6587\u672c<<\/span>\/<\/span>li<\/span>><\/span><\/div>\n
    <\/span><<\/span>li<\/span>><\/span>\u4e00\u4e9b\u6587\u672c<<\/span>\/<\/span>li<\/span>><\/span><\/div>\n
    <\/span><<\/span>li<\/span>><\/span>\u4e00\u4e9b\u6587\u672c<<\/span>\/<\/span>li<\/span>><\/span><\/div>\n
    <\/span><<\/span>li<\/span>><\/span>\u4e00\u4e9b\u6587\u672c<<\/span>\/<\/span>li<\/span>><\/span><\/div>\n
<<\/span>\/<\/span>ul<\/span>><\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

CSS:<\/strong><\/p>\n

\n
 <\/div>\n
\n\n\n\n
\n
\n
1<\/div>\n
2<\/div>\n
3<\/div>\n<\/div>\n<\/td>\n
\n
\n
li<\/span>:<\/span>not<\/span>(<\/span>.<\/span>first<\/span>–<\/span>item<\/span>)<\/span> {<\/span><\/div>\n
    <\/span>color<\/span>:<\/span> orange<\/span>;<\/span><\/div>\n
}<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

2 :first-child<\/strong><\/p>\n

\u5339\u914d\u5143\u7d20\u7684\u7b2c\u4e00\u4e2a\u5b50\u5143\u7d20\u3002<\/p>\n

\u5982\u4e0b\u4f8b\uff0c\u7b2c\u4e00\u4e2a<li>\u5143\u7d20\u7684\u6587\u672c\u4f1a\u53d8\u4e3a\u6a59\u8272\u3002<\/p>\n

HTML:<\/strong><\/p>\n

\n
 <\/div>\n
\n\n\n\n
\n
\n
1<\/div>\n
2<\/div>\n
3<\/div>\n
4<\/div>\n
5<\/div>\n<\/div>\n<\/td>\n
\n
\n
<<\/span>ul<\/span>><\/span><\/div>\n
    <\/span><<\/span>li<\/span>><\/span>\u8fd9\u91cc\u7684\u6587\u672c\u662f\u6a59\u8272\u7684<<\/span>\/<\/span>li<\/span>><\/span><\/div>\n
    <\/span><<\/span>li<\/span>><\/span>\u4e00\u4e9b\u6587\u672c<<\/span>\/<\/span>li<\/span>><\/span><\/div>\n
    <\/span><<\/span>li<\/span>><\/span>\u4e00\u4e9b\u6587\u672c<<\/span>\/<\/span>li<\/span>><\/span><\/div>\n
<<\/span>\/<\/span>ul<\/span>><\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

CSS:<\/strong><\/p>\n

\n
 <\/div>\n
\n\n\n\n
\n
\n
1<\/div>\n
2<\/div>\n
3<\/div>\n<\/div>\n<\/td>\n
\n
\n
li<\/span>:<\/span>first<\/span>–<\/span>child<\/span> {<\/span><\/div>\n
    <\/span>color<\/span>:<\/span> orange<\/span>;<\/span><\/div>\n
}<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

3 : last-child<\/strong><\/p>\n

\u5339\u914d\u5143\u7d20\u7684\u6700\u540e\u4e00\u4e2a\u5b50\u5143\u7d20\u3002<\/p>\n

\u5982\u4e0b\u4f8b\uff0c\u6700\u540e\u4e00\u4e2a<li>\u5143\u7d20\u7684\u6587\u672c\u4f1a\u53d8\u4e3a\u6a59\u8272\u3002<\/p>\n

HTML:<\/strong><\/p>\n

\n
 <\/div>\n
\n\n\n\n
\n
\n
1<\/div>\n
2<\/div>\n
3<\/div>\n
4<\/div>\n
5<\/div>\n<\/div>\n<\/td>\n
\n
\n
<<\/span>ul<\/span>><\/span><\/div>\n
    <\/span><<\/span>li<\/span>><\/span>\u4e00\u4e9b\u6587\u672c<<\/span>\/<\/span>li<\/span>><\/span><\/div>\n
    <\/span><<\/span>li<\/span>><\/span>\u4e00\u4e9b\u6587\u672c<<\/span>\/<\/span>li<\/span>><\/span><\/div>\n
    <\/span><<\/span>li<\/span>><\/span>\u8fd9\u91cc\u7684\u6587\u672c\u662f\u6a59\u8272\u7684<<\/span>\/<\/span>li<\/span>><\/span><\/div>\n
<<\/span>\/<\/span>ul<\/span>><\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

CSS:<\/strong><\/p>\n

\n
 <\/div>\n
\n\n\n\n
\n
\n
1<\/div>\n
2<\/div>\n
3<\/div>\n<\/div>\n<\/td>\n
\n
\n
li<\/span>:<\/span>last<\/span>–<\/span>child<\/span> {<\/span><\/div>\n
    <\/span>color<\/span>:<\/span> orange<\/span>;<\/span><\/div>\n
}<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

4 first-of-type<\/strong><\/p>\n

\u5339\u914d\u5c5e\u4e8e\u5176\u7236\u5143\u7d20\u7684\u9996\u4e2a\u7279\u5b9a\u7c7b\u578b\u7684\u5b50\u5143\u7d20\u7684\u6bcf\u4e2a\u5143\u7d20\u3002<\/p>\n

\u5982\u4e0b\u4f8b\uff0c\u7b2c\u4e00\u4e2a<li>\u5143\u7d20\u548c\u7b2c\u4e00\u4e2a<span>\u5143\u7d20\u7684\u6587\u672c\u4f1a\u53d8\u4e3a\u6a59\u8272\u3002<\/p>\n

HTML:<\/strong><\/p>\n

\n
 <\/div>\n
\n\n\n\n
\n
\n
1<\/div>\n
2<\/div>\n
3<\/div>\n
4<\/div>\n
5<\/div>\n<\/div>\n<\/td>\n
\n
\n
<<\/span>ul<\/span>><\/span><\/div>\n
    <\/span><<\/span>li<\/span>><\/span>\u8fd9\u91cc\u7684\u6587\u672c\u662f\u6a59\u8272\u7684<<\/span>\/li><\/span><\/div>\n
    <li>\u4e00\u4e9b\u6587\u672c <span>\u8fd9\u91cc\u7684\u6587\u672c\u662f\u6a59\u8272\u7684<\/s<\/span>pan<\/span>><\/span><<\/span>\/<\/span>li<\/span>><\/span><\/div>\n
    <\/span><<\/span>li<\/span>><\/span>\u4e00\u4e9b\u6587\u672c<<\/span>\/<\/span>li<\/span>><\/span><\/div>\n
<<\/span>\/<\/span>ul<\/span>><\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

CSS:<\/strong><\/p>\n

\n
 <\/div>\n
\n\n\n\n
\n
\n
1<\/div>\n
2<\/div>\n
3<\/div>\n<\/div>\n<\/td>\n
\n
\n
ul<\/span> :<\/span>first<\/span>–<\/span>of<\/span>–<\/span>type<\/span> {<\/span><\/div>\n
    <\/span>color<\/span>:<\/span> orange<\/span>;<\/span><\/div>\n
}<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

5 :last-of-type<\/strong><\/p>\n

\u5339\u914d\u5143\u7d20\u7684\u6700\u540e\u4e00\u4e2a\u5b50\u5143\u7d20\u3002<\/p>\n

\u5982\u4e0b\u4f8b\uff0c\u6700\u540e\u4e00\u4e2a<li>\u5143\u7d20\u7684\u6587\u672c\u4f1a\u53d8\u4e3a\u6a59\u8272\u3002<\/p>\n

HTML:<\/strong><\/p>\n

\n
 <\/div>\n
\n\n\n\n
\n
\n
1<\/div>\n
2<\/div>\n
3<\/div>\n
4<\/div>\n
5<\/div>\n<\/div>\n<\/td>\n
\n
\n
<<\/span>ul<\/span>><\/span><\/div>\n
    <\/span><<\/span>li<\/span>><\/span>\u4e00\u4e9b\u6587\u672c<<\/span>span<\/span>><\/span>\u4e00\u4e9b\u6587\u672c<<\/span>\/span> <span>\u8fd9\u91cc\u7684\u6587\u672c\u662f\u6a59\u8272\u7684<\/s<\/span>pan<\/span>><\/span><<\/span>\/<\/span>li<\/span>><\/span><\/div>\n
    <\/span><<\/span>li<\/span>><\/span>\u4e00\u4e9b\u6587\u672c<<\/span>\/<\/span>li<\/span>><\/span><\/div>\n
    <\/span><<\/span>li<\/span>><\/span>\u8fd9\u91cc\u7684\u6587\u672c\u662f\u6a59\u8272\u7684<<\/span>\/<\/span>li<\/span>><\/span><\/div>\n
<<\/span>\/<\/span>ul<\/span>><\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

CSS:<\/strong><\/p>\n

\n
 <\/div>\n
\n\n\n\n
\n
\n
1<\/div>\n
2<\/div>\n
3<\/div>\n<\/div>\n<\/td>\n
\n
\n
ul<\/span> :<\/span>last<\/span>–<\/span>of<\/span>–<\/span>type<\/span> {<\/span><\/div>\n
    <\/span>color<\/span>:<\/span> orange<\/span>;<\/span><\/div>\n
}<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

6 :nth-child<\/strong><\/p>\n

:nth-child\u6839\u636e\u5143\u7d20\u7684\u4f4d\u7f6e\u5339\u914d\u4e00\u4e2a\u6216\u8005\u591a\u4e2a\u5143\u7d20\uff0c\u5b83\u63a5\u53d7\u4e00\u4e2aan+b\u5f62\u5f0f\u7684\u53c2\u6570\uff0can+b\u5339\u914d\u5230\u7684\u5143\u7d20\u793a\u4f8b\u5982\u4e0b\uff1a<\/p>\n

    \n
  • 1n+0\uff0c\u6216n\uff0c\u5339\u914d\u6bcf\u4e00\u4e2a\u5b50\u5143\u7d20\u3002<\/li>\n
  • 2n+0\uff0c\u62162n\uff0c\u5339\u914d\u4f4d\u7f6e\u4e3a2\u30014\u30016\u30018\u2026\u7684\u5b50\u5143\u7d20\uff0c\u8be5\u8868\u8fbe\u5f0f\u4e0e\u5173\u952e\u5b57even\u7b49\u4ef7\u3002<\/li>\n
  • 2n+1\u5339\u914d\u4f4d\u7f6e\u4e3a1\u30013\u30015\u30017\u2026\u7684\u5b50\u5143\u7d20\u3001\u8be5\u8868\u8fbe\u5f0f\u4e0e\u5173\u952e\u5b57odd\u7b49\u4ef7\u3002<\/li>\n
  • 3n+4\u5339\u914d\u4f4d\u7f6e\u4e3a4\u30017\u300110\u300113\u2026\u7684\u5b50\u5143\u7d20\u3002<\/li>\n<\/ul>\n

    \u5982\u4e0b\u4f8b\uff0c\u6709\u4ee5\u4e0bHTML\u5217\u8868\uff1a<\/p>\n

    \n
     <\/div>\n
    \n\n\n\n
    \n
    \n
    1<\/div>\n
    2<\/div>\n
    3<\/div>\n
    4<\/div>\n
    5<\/div>\n
    6<\/div>\n
    7<\/div>\n
    8<\/div>\n
    9<\/div>\n
    10<\/div>\n
    11<\/div>\n
    12<\/div>\n<\/div>\n<\/td>\n
    		\n
    \n
    <<\/span>ol<\/span>><\/span><\/div>\n
        <\/span><<\/span>li<\/span>><\/span>Alpha<\/span><<\/span>\/<\/span>li<\/span>><\/span><\/div>\n
        <\/span><<\/span>li<\/span>><\/span>Beta<\/span><<\/span>\/<\/span>li<\/span>><\/span><\/div>\n
        <\/span><<\/span>li<\/span>><\/span>Gamma<\/span><<\/span>\/<\/span>li<\/span>><\/span><\/div>\n
        <\/span><<\/span>li<\/span>><\/span>Delta<\/span><<\/span>\/<\/span>li<\/span>><\/span><\/div>\n
        <\/span><<\/span>li<\/span>><\/span>Epsilon<\/span><<\/span>\/<\/span>li<\/span>><\/span><\/div>\n
        <\/span><<\/span>li<\/span>><\/span>Zeta<\/span><<\/span>\/<\/span>li<\/span>><\/span><\/div>\n
        <\/span><<\/span>li<\/span>><\/span>Eta<\/span><<\/span>\/<\/span>li<\/span>><\/span><\/div>\n
        <\/span><<\/span>li<\/span>><\/span>Theta<\/span><<\/span>\/<\/span>li<\/span>><\/span><\/div>\n
        <\/span><<\/span>li<\/span>><\/span>Iota<\/span><<\/span>\/<\/span>li<\/span>><\/span><\/div>\n
        <\/span><<\/span>li<\/span>><\/span>Kappa<\/span><<\/span>\/<\/span>li<\/span>><\/span><\/div>\n
    <<\/span>\/<\/span>ol<\/span>><\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

    CSS:<\/strong><\/p>\n

    \u9009\u62e9\u7b2c\u4e8c\u4e2a\u5143\u7d20\uff0c\u201dBeta\u201d\u4f1a\u53d8\u6210\u6a59\u8272\uff1a<\/p>\n

    \n
     <\/div>\n
    \n\n\n\n
    \n
    \n
    1<\/div>\n
    2<\/div>\n
    3<\/div>\n<\/div>\n<\/td>\n
    		\n
    \n
    ol<\/span> :<\/span>nth<\/span>–<\/span>child<\/span>(<\/span>2<\/span>)<\/span> {<\/span><\/div>\n
        <\/span>color<\/span>:<\/span> orange<\/span>;<\/span><\/div>\n
    }<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

    \u9009\u62e9\u4f4d\u7f6e\u5e8f\u53f7\u662f2\u7684\u500d\u6570\u7684\u5143\u7d20\uff0c\u201dBeta\u201d, \u201cDelta\u201d, \u201cZeta\u201d, \u201ckappa\u201d\u4f1a\u53d8\u6210\u6a59\u8272:<\/p>\n

    \n
     <\/div>\n
    \n\n\n\n
    \n
    \n
    1<\/div>\n
    2<\/div>\n
    3<\/div>\n<\/div>\n<\/td>\n
    		\n
    \n
    ol<\/span> :<\/span>nth<\/span>–<\/span>child<\/span>(<\/span>2n<\/span>)<\/span> {<\/span><\/div>\n
        <\/span>color<\/span>:<\/span> orange<\/span>;<\/span><\/div>\n
    }<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

    \u9009\u62e9\u4f4d\u7f6e\u5e8f\u53f7\u4e3a\u5076\u6570\u7684\u5143\u7d20\uff1a<\/p>\n

    \n
     <\/div>\n
    \n\n\n\n
    \n
    \n
    1<\/div>\n
    2<\/div>\n
    3<\/div>\n<\/div>\n<\/td>\n
    		\n
    \n
    ol<\/span> :<\/span>nth<\/span>–<\/span>child<\/span>(<\/span>even<\/span>)<\/span> {<\/span><\/div>\n
        <\/span>color<\/span>:<\/span> orange<\/span>;<\/span><\/div>\n
    }<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

    \u9009\u62e9\u4ece\u7b2c6\u4e2a\u5f00\u59cb\uff0c\u4f4d\u7f6e\u5e8f\u53f7\u662f2\u7684\u500d\u6570\u7684\u5143\u7d20\uff0c\u201dZeta\u201d, \u201cTheta\u201d, \u201cKappa\u201d\u4f1a\u53d8\u6210\u6a59\u8272\uff1a<\/p>\n

    \n
     <\/div>\n
    \n\n\n\n
    \n
    \n
    1<\/div>\n
    2<\/div>\n
    3<\/div>\n<\/div>\n<\/td>\n
    		\n
    \n
    ol<\/span> :<\/span>nth<\/span>–<\/span>child<\/span>(<\/span>2n<\/span>+<\/span>6<\/span>)<\/span> {<\/span><\/div>\n
        <\/span>color<\/span>:<\/span> orange<\/span>;<\/span><\/div>\n
    }<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

    7 :nth-last-child<\/strong><\/p>\n

    :nth-last-child\u4e0e:nth-child\u76f8\u4f3c\uff0c\u4e0d\u540c\u4e4b\u5904\u5728\u4e8e\u5b83\u662f\u4ece\u6700\u540e\u4e00\u4e2a\u5b50\u5143\u7d20\u5f00\u59cb\u8ba1\u6570\u7684\u3002<\/p>\n

    8 :nth-of-type<\/strong><\/p>\n

    :nth-of-type\u4e0enth-child\u76f8\u4f3c\uff0c\u4e0d\u540c\u4e4b\u5904\u5728\u4e8e\u5b83\u662f\u53ea\u5339\u914d\u7279\u5b9a\u7c7b\u578b\u7684\u5143\u7d20\u3002<\/p>\n

    \u5982\u4e0b\u4f8b\uff0c\u7b2c\u4e8c\u4e2a<p>\u5143\u7d20\u4f1a\u53d8\u4e3a\u6a59\u8272\u3002<\/p>\n

    HTML:<\/strong><\/p>\n

    \n
     <\/div>\n
    \n\n\n\n
    \n
    \n
    1<\/div>\n
    2<\/div>\n
    3<\/div>\n
    4<\/div>\n
    5<\/div>\n
    6<\/div>\n<\/div>\n<\/td>\n
    		\n
    \n
    <<\/span>article<\/span>><\/span><\/div>\n
        <\/span><<\/span>h1<\/span>><\/span>\u6211\u662f\u6807\u9898<<\/span>\/<\/span>h1<\/span>><\/span><\/div>\n
        <\/span><<\/span>p<\/span>><\/span>\u4e00\u4e9b\u6587\u672c<<\/span>\/<\/span>p<\/span>><\/span><\/div>\n
        <\/span><<\/span>a<\/span> href<\/span>=<\/span>“”<\/span>><\/span><<\/span>img <\/span>src<\/span>=<\/span>“images\/rwd.png”<\/span> alt<\/span>=<\/span>“Mastering RWD”<\/span>><\/span><<\/span>\/<\/span>a<\/span>><\/span><\/div>\n
        <\/span><<\/span>p<\/span>><\/span>\u8fd9\u91cc\u7684\u6587\u672c\u662f\u6a59\u8272\u7684<<\/span>\/<\/span>p<\/span>><\/span><\/div>\n
    <<\/span>\/<\/span>article<\/span>><\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

    CSS:<\/strong><\/p>\n

    \n
     <\/div>\n
    \n\n\n\n
    \n
    \n
    1<\/div>\n
    2<\/div>\n
    3<\/div>\n<\/div>\n<\/td>\n
    		\n
    \n
    p<\/span>:<\/span>nth<\/span>–<\/span>of<\/span>–<\/span>type<\/span>(<\/span>2<\/span>)<\/span> {<\/span><\/div>\n
        <\/span>color<\/span>:<\/span> orange<\/span>;<\/span><\/div>\n
    }<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

    9 :nth-last-type<\/strong><\/p>\n

    :nth-last-of-type\u4e0enth-of-type\u76f8\u4f3c\uff0c\u4e0d\u540c\u4e4b\u5904\u5728\u4e8e\u5b83\u662f\u4ece\u6700\u540e\u4e00\u4e2a\u5b50\u5143\u7d20\u5f00\u59cb\u8ba1\u6570\u7684\u3002<\/p>\n

    10 :only-child<\/strong><\/p>\n

    \u5f53\u5143\u7d20\u662f\u5176\u7236\u5143\u7d20\u4e2d\u552f\u4e00\u4e00\u4e2a\u5b50\u5143\u7d20\u65f6\uff0c:only-child\u5339\u914d\u8be5\u5143\u7d20\u3002<\/p>\n

    HTML:<\/strong><\/p>\n

    \n
     <\/div>\n
    \n\n\n\n
    \n
    \n
    1<\/div>\n
    2<\/div>\n
    3<\/div>\n
    4<\/div>\n
    5<\/div>\n
    6<\/div>\n
    7<\/div>\n
    8<\/div>\n<\/div>\n<\/td>\n
    		\n
    \n
    <<\/span>ul<\/span>><\/span><\/div>\n
        <\/span><<\/span>li<\/span>><\/span>\u8fd9\u91cc\u7684\u6587\u672c\u662f\u6a59\u8272\u7684<<\/span>\/<\/span>li<\/span>><\/span><\/div>\n
    <<\/span>\/<\/span>ul<\/span>><\/span><\/div>\n
     <\/div>\n
    <<\/span>ul<\/span>><\/span><\/div>\n
        <\/span><<\/span>li<\/span>><\/span>\u4e00\u4e9b\u6587\u672c<<\/span>\/<\/span>li<\/span>><\/span><\/div>\n
        <\/span><<\/span>li<\/span>><\/span>\u4e00\u4e9b\u6587\u672c<<\/span>\/<\/span>li<\/span>><\/span><\/div>\n
    <<\/span>\/<\/span>ul<\/span>><\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

    CSS:<\/strong><\/p>\n

    \n
     <\/div>\n
    \n\n\n\n
    \n
    \n
    1<\/div>\n
    2<\/div>\n
    3<\/div>\n<\/div>\n<\/td>\n
    		\n
    \n
    ul<\/span> :<\/span>only<\/span>–<\/span>child<\/span> {<\/span><\/div>\n
        <\/span>color<\/span>:<\/span> orange<\/span>;<\/span><\/div>\n
    }<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

    11 :only-of-type<\/strong><\/p>\n

    \u5f53\u5143\u7d20\u662f\u5176\u7236\u5143\u7d20\u4e2d\u552f\u4e00\u4e00\u4e2a\u7279\u5b9a\u7c7b\u578b\u7684\u5b50\u5143\u7d20\u65f6\uff0c:only-child\u5339\u914d\u8be5\u5143\u7d20\u3002<\/p>\n

    \u5982\u4e0b\u4f8b\uff0c\u7b2c\u4e00\u4e2aul\u5143\u7d20\u53ea\u6709\u4e00\u4e2ali\u7c7b\u578b\u7684\u5143\u7d20\uff0c\u8be5li\u5143\u7d20\u7684\u6587\u672c\u4f1a\u53d8\u4e3a\u6a59\u8272\u3002<\/p>\n

    HTML:<\/strong><\/p>\n

    \n
     <\/div>\n
    \n\n\n\n
    \n
    \n
    1<\/div>\n
    2<\/div>\n
    3<\/div>\n
    4<\/div>\n
    5<\/div>\n
    6<\/div>\n
    7<\/div>\n
    8<\/div>\n
    9<\/div>\n<\/div>\n<\/td>\n
    		\n
    \n
    <<\/span>ul<\/span>><\/span><\/div>\n
        <\/span><<\/span>li<\/span>><\/span>\u8fd9\u91cc\u7684\u6587\u672c\u662f\u6a59\u8272\u7684<<\/span>\/<\/span>li<\/span>><\/span><\/div>\n
        <\/span><<\/span>p<\/span>><\/span>\u8fd9\u91cc\u4e0d\u662f\u6a59\u8272<<\/span>\/<\/span>p<\/span>><\/span><\/div>\n
    <<\/span>\/<\/span>ul<\/span>><\/span><\/div>\n
     <\/div>\n
    <<\/span>ul<\/span>><\/span><\/div>\n
        <\/span><<\/span>li<\/span>><\/span>\u4e00\u4e9b\u6587\u672c<<\/span>\/<\/span>li<\/span>><\/span><\/div>\n
        <\/span><<\/span>li<\/span>><\/span>\u4e00\u4e9b\u6587\u672c<<\/span>\/<\/span>li<\/span>><\/span><\/div>\n
    <<\/span>\/<\/span>ul<\/span>><\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

    CSS:<\/strong><\/p>\n

    \n
     <\/div>\n
    \n\n\n\n
    \n
    \n
    1<\/div>\n
    2<\/div>\n
    3<\/div>\n<\/div>\n<\/td>\n
    		\n
    \n
    li<\/span>:<\/span>only<\/span>–<\/span>of<\/span>–<\/span>type<\/span> {<\/span><\/div>\n
        <\/span>color<\/span>:<\/span> orange<\/span>;<\/span><\/div>\n
    }<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

    12 :target<\/strong><\/p>\n

    \u5f53URL\u5e26\u6709\u951a\u540d\u79f0\uff0c\u6307\u5411\u6587\u6863\u5185\u67d0\u4e2a\u5177\u4f53\u7684\u5143\u7d20\u65f6\uff0c:target\u5339\u914d\u8be5\u5143\u7d20\u3002<\/p>\n

    \u5982\u4e0b\u4f8b\uff0curl\u4e2d\u7684target\u547d\u4e2did\u503c\u4e3atarget\u7684article\u5143\u7d20\uff0carticle\u5143\u7d20\u7684\u80cc\u666f\u4f1a\u53d8\u4e3a\u9ec4\u8272\u3002<\/p>\n

    URL:<\/strong><\/p>\n

    http:\/\/example.com\/#target<\/p>\n

    HTML:<\/strong><\/p>\n

    \n
     <\/div>\n
    \n\n\n\n
    \n
    \n
    1<\/div>\n
    2<\/div>\n
    3<\/div>\n
    4<\/div>\n<\/div>\n<\/td>\n
    		\n
    \n
    <<\/span>article <\/span>id<\/span>=<\/span>“target”<\/span>><\/span><\/div>\n
        <\/span><<\/span>h1<\/span>><\/span><<\/span>code<\/span>><\/span>:<\/span>target<\/span><<\/span>\/<\/span>code<\/span>><\/span> pseudo<\/span>–<\/span>class<\/span><<\/span>\/<\/span>h1<\/span>><\/span><\/div>\n
        <\/span><<\/span>p<\/span>><\/span>Lorem <\/span>ipsum <\/span>dolor <\/span>sit <\/span>amet<\/span>,<\/span> consectetur <\/span>adipisicing <\/span>elit<\/span>!<\/span><<\/span>\/<\/span>p<\/span>><\/span><\/div>\n
    <<\/span>\/<\/span>article<\/span>><\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

    CSS:<\/strong><\/p>\n

    \n
     <\/div>\n
    \n\n\n\n
    \n
    \n
    1<\/div>\n
    2<\/div>\n
    3<\/div>\n<\/div>\n<\/td>\n
    		\n
    \n
    :<\/span>target<\/span> {<\/span><\/div>\n
        <\/span>background<\/span>:<\/span> yellow<\/span>;<\/span><\/div>\n
    }<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

    \u8868\u5355\u76f8\u5173<\/strong><\/p>\n

    1 :checked<\/strong><\/p>\n

    :checked\u5339\u914d\u88ab\u9009\u4e2d\u7684input\u5143\u7d20\uff0c\u8fd9\u4e2ainput\u5143\u7d20\u5305\u62ecradio\u548ccheckbox\u3002<\/p>\n

    \u5982\u4e0b\u4f8b\uff0c\u5f53\u590d\u9009\u6846\u88ab\u9009\u4e2d\u65f6\uff0c\u4e0e\u5176\u76f8\u90bb\u7684<label>\u5143\u7d20\u7684\u80cc\u666f\u4f1a\u53d8\u6210\u9ec4\u8272\u3002<\/p>\n

    HTML:<\/strong><\/p>\n

    \n
     <\/div>\n
    \n\n\n\n
    \n
    \n
    1<\/div>\n
    2<\/div>\n<\/div>\n<\/td>\n
    		\n
    \n
    <<\/span>input <\/span>type<\/span>=<\/span>“checkbox”<\/span>\/<\/span>><\/span><\/div>\n
    <<\/span>label<\/span>><\/span>\u6211\u540c\u610f<<\/span>\/<\/span>label<\/span>><\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

    CSS:<\/strong><\/p>\n

    \n
     <\/div>\n
    \n\n\n\n
    \n
    \n
    1<\/div>\n
    2<\/div>\n
    3<\/div>\n<\/div>\n<\/td>\n
    		\n
    \n
    input<\/span>:<\/span>checked<\/span> +<\/span> label<\/span> {<\/span><\/div>\n
        <\/span>background<\/span>:<\/span> yellow<\/span>;<\/span><\/div>\n
    }<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

    2 :default<\/strong><\/p>\n

    :default\u5339\u914d\u9ed8\u8ba4\u9009\u4e2d\u7684\u5143\u7d20\uff0c\u4f8b\u5982\uff1a\u63d0\u4ea4\u6309\u94ae\u603b\u662f\u8868\u5355\u7684\u9ed8\u8ba4\u6309\u94ae\u3002<\/p>\n

    \u5982\u4e0b\u4f8b\uff0c\u53ea\u6709\u63d0\u4ea4\u6309\u94ae\u7684\u80cc\u666f\u53d8\u6210\u4e86\u9ec4\u8272\u3002<\/p>\n

    HTML:<\/strong><\/p>\n

    \n
     <\/div>\n
    \n\n\n\n
    \n
    \n
    1<\/div>\n
    2<\/div>\n
    3<\/div>\n
    4<\/div>\n<\/div>\n<\/td>\n
    		\n
    \n
    <<\/span>form <\/span>action<\/span>=<\/span>“#”<\/span>><\/span><\/div>\n
        <\/span><<\/span>button<\/span>><\/span>\u91cd\u7f6e<<\/span>\/<\/span>button<\/span>><\/span><\/div>\n
        <\/span><<\/span>button <\/span>type<\/span>=<\/span>“submit”<\/span>><\/span>\u63d0\u4ea4<<\/span>\/<\/span>button<\/span>><\/span><\/div>\n
    <<\/span>\/<\/span>form<\/span>><\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

    CSS:<\/strong><\/p>\n

    \n
     <\/div>\n
    \n\n\n\n
    \n
    \n
    1<\/div>\n
    2<\/div>\n
    3<\/div>\n<\/div>\n<\/td>\n
    		\n
    \n
    :<\/span>default<\/span>  <\/span>{<\/span><\/div>\n
        <\/span>background<\/span>:<\/span> yellow<\/span>;<\/span><\/div>\n
    }<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

    3 :disabled<\/strong><\/p>\n

    :disabled\u5339\u914d\u7981\u7528\u7684\u8868\u5355\u5143\u7d20\u3002<\/p>\n

    \u5982\u4e0b\u4f8b\uff0c\u88ab\u7981\u7528input\u8f93\u5165\u6846\u7684\u900f\u660e\u5ea6\u4f1a\u53d8\u621050%\u3002<\/p>\n

    HTML:<\/strong><\/p>\n

    \n
     <\/div>\n
    \n\n\n\n
    \n
    \n
    1<\/div>\n<\/div>\n<\/td>\n
    		\n
    \n
    <<\/span>input <\/span>type<\/span>=<\/span>“text”<\/span> disabled<\/span>\/<\/span>><\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

    CSS:<\/strong><\/p>\n

    \n
     <\/div>\n
    \n\n\n\n
    \n
    \n
    1<\/div>\n
    2<\/div>\n
    3<\/div>\n<\/div>\n<\/td>\n
    		\n
    \n
    :<\/span>disabled<\/span> {<\/span><\/div>\n
        <\/span>opacity<\/span>:<\/span> .<\/span>5<\/span>;<\/span><\/div>\n
    }<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

    4 :empty<\/strong><\/p>\n

    :empty\u5339\u914d\u6ca1\u6709\u5b50\u5143\u7d20\u7684\u5143\u7d20\u3002\u5982\u679c\u5143\u7d20\u4e2d\u542b\u6709\u6587\u672c\u8282\u70b9\u3001HTML\u5143\u7d20\u6216\u8005\u4e00\u4e2a\u7a7a\u683c\uff0c\u5219:empty\u4e0d\u80fd\u5339\u914d\u8fd9\u4e2a\u5143\u7d20\u3002<\/p>\n

    \u5982\u4e0b\u4f8b\uff0c:empty\u80fd\u5339\u914d\u7684\u5143\u7d20\u4f1a\u53d8\u4e3a\u9ec4\u8272\u3002<\/p>\n

    \u7b2c\u4e00\u4e2a\u5143\u7d20\u4e2d\u6709\u6587\u672c\u8282\u70b9\uff0c\u6240\u4ee5\u5176\u80cc\u666f\u4e0d\u4f1a\u53d8\u6210\u9ec4\u8272\uff1b<\/p>\n

    \u7b2c\u4e8c\u4e2a\u5143\u7d20\u4e2d\u6709\u4e00\u4e2a\u7a7a\u683c\uff0c\u6709\u7a7a\u683c\u5219\u8be5\u5143\u7d20\u4e0d\u4e3a\u7a7a\uff0c\u6240\u4ee5\u5176\u80cc\u666f\u4e0d\u4f1a\u53d8\u6210\u9ec4\u8272\uff1b<\/p>\n

    \u7b2c\u4e09\u4e2a\u5143\u7d20\u4e2d\u6ca1\u6709\u4efb\u4f55\u5185\u5bb9\uff0c\u6240\u4ee5\u5176\u80cc\u666f\u4f1a\u53d8\u6210\u9ec4\u8272\uff1b<\/p>\n

    \u7b2c\u56db\u4e2a\u5143\u7d20\u4e2d\u53ea\u6709\u4e00\u4e2a\u6ce8\u91ca\uff0c\u6b64\u65f6\u8be5\u5143\u7d20\u662f\u7a7a\u7684\uff0c\u6240\u4ee5\u5176\u80cc\u666f\u4f1a\u53d8\u6210\u9ec4\u8272\uff1b<\/p>\n

    HTML:<\/strong><\/p>\n

    \n
     <\/div>\n
    \n\n\n\n
    \n
    \n
    1<\/div>\n
    2<\/div>\n
    3<\/div>\n
    4<\/div>\n<\/div>\n<\/td>\n
    		\n
    \n
    <<\/span>div<\/span>><\/span>\u8fd9\u4e2a\u5bb9\u5668\u91cc\u7684\u80cc\u666f\u662f\u6a59\u8272\u7684<<\/span>\/<\/span>div<\/span>><\/span><\/div>\n
    <<\/span>div<\/span>><\/span> <<\/span>\/<\/span>div<\/span>><\/span><\/div>\n
    <<\/span>div<\/span>><\/span><<\/span>\/<\/span>div<\/span>><\/span><\/div>\n
    <<\/span>div<\/span>><\/span><<\/span>!<\/span>—<\/span> This<\/span> comment <\/span>is<\/span> not<\/span> considered <\/span>content<\/span> —<\/span>><\/span><<\/span>\/<\/span>div<\/span>><\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

    CSS:<\/strong><\/p>\n

    \n
     <\/div>\n
    \n\n\n\n
    \n
    \n
    1<\/div>\n
    2<\/div>\n
    3<\/div>\n
    4<\/div>\n
    5<\/div>\n
    6<\/div>\n
    7<\/div>\n
    8<\/div>\n
    9<\/div>\n<\/div>\n<\/td>\n
    		\n
    \n
    div<\/span> {<\/span><\/div>\n
        <\/span>background<\/span>:<\/span> orange<\/span>;<\/span><\/div>\n
        <\/span>height<\/span>:<\/span> 30px<\/span>;<\/span><\/div>\n
        <\/span>width<\/span>:<\/span> 200px<\/span>;<\/span><\/div>\n
    }<\/span><\/div>\n
     <\/div>\n
    div<\/span>:<\/span>empty<\/span> {<\/span><\/div>\n
        <\/span>background<\/span>:<\/span> yellow<\/span>;<\/span><\/div>\n
    }<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

    5 :enabled<\/strong><\/p>\n

    :enabled\u5339\u914d\u6ca1\u6709\u8bbe\u7f6edisabled\u5c5e\u6027\u7684\u8868\u5355\u5143\u7d20\u3002<\/p>\n

    6 :in-range<\/strong><\/p>\n

    :in-range\u5339\u914d\u5728\u6307\u5b9a\u533a\u57df\u5185\u5143\u7d20\u3002<\/p>\n

    \u5982\u4e0b\u4f8b\uff0c\u5f53\u6570\u5b57\u9009\u62e9\u5668\u7684\u6570\u5b57\u57285\u523010\u662f\uff0c\u6570\u5b57\u9009\u62e9\u5668\u7684\u8fb9\u6846\u4f1a\u8bbe\u4e3a\u7eff\u8272\u3002<\/p>\n

    HTML:<\/strong><\/p>\n

    \n
     <\/div>\n
    \n\n\n\n
    \n
    \n
    1<\/div>\n<\/div>\n<\/td>\n
    		\n
    \n
    <<\/span>input <\/span>type<\/span>=<\/span>“number”<\/span> min<\/span>=<\/span>“5”<\/span> max<\/span>=<\/span>“10”<\/span>><\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

    CSS:<\/strong><\/p>\n

    \n
     <\/div>\n
    \n\n\n\n
    \n
    \n
    1<\/div>\n
    2<\/div>\n
    3<\/div>\n
    4<\/div>\n
    5<\/div>\n
    6<\/div>\n
    7<\/div>\n<\/div>\n<\/td>\n
    		\n
    \n
    input<\/span>[<\/span>type<\/span>=<\/span>number<\/span>]<\/span> {<\/span><\/div>\n
        <\/span>border<\/span>:<\/span> 5px<\/span> solid <\/span>orange<\/span>;<\/span><\/div>\n
    }<\/span><\/div>\n
     <\/div>\n
    input<\/span>[<\/span>type<\/span>=<\/span>number<\/span>]<\/span>:<\/span>in<\/span>–<\/span>range<\/span> {<\/span><\/div>\n
        <\/span>border<\/span>:<\/span> 5px<\/span> solid <\/span>green<\/span>;<\/span><\/div>\n
    }<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

    7 :out-of-range<\/strong><\/p>\n

    :out-of-range\u4e0e:in-range\u76f8\u53cd\uff0c\u5b83\u5339\u914d\u4e0d\u5728\u6307\u5b9a\u533a\u57df\u5185\u7684\u5143\u7d20\u3002<\/p>\n

    8 :indeterminate<\/strong><\/p>\n

    indeterminate\u7684\u82f1\u6587\u610f\u601d\u662f\u201c\u4e0d\u786e\u5b9a\u7684\u201d\u3002\u5f53\u67d0\u7ec4\u4e2d\u7684\u5355\u9009\u6846\u6216\u590d\u9009\u6846\u8fd8\u6ca1\u6709\u9009\u53d6\u72b6\u6001\u65f6\uff0c:indeterminate\u5339\u914d\u8be5\u7ec4\u4e2d\u6240\u6709\u7684\u5355\u9009\u6846\u6216\u590d\u9009\u6846\u3002<\/p>\n

    \u5982\u4e0b\u4f8b\uff0c\u5f53\u4e0b\u9762\u7684\u4e00\u7ec4\u5355\u9009\u6846\u6ca1\u6709\u4e00\u4e2a\u5904\u4e8e\u88ab\u9009\u4e2d\u65f6\uff0c\u4e0einput\u76f8\u90bb\u7684label\u5143\u7d20\u7684\u80cc\u666f\u4f1a\u88ab\u8bbe\u4e3a\u6a59\u8272\u3002<\/p>\n

    HTML:<\/strong><\/p>\n

    \n
     <\/div>\n
    \n\n\n\n
    \n
    \n
    1<\/div>\n
    2<\/div>\n
    3<\/div>\n
    4<\/div>\n
    5<\/div>\n
    6<\/div>\n
    7<\/div>\n
    8<\/div>\n
    9<\/div>\n
    10<\/div>\n
    11<\/div>\n
    12<\/div>\n
    13<\/div>\n
    14<\/div>\n<\/div>\n<\/td>\n
    		\n
    \n
    <<\/span>ul<\/span>><\/span><\/div>\n
        <\/span><<\/span>li<\/span>><\/span><\/div>\n
            <\/span><<\/span>input <\/span>type<\/span>=<\/span>“radio”<\/span> name<\/span>=<\/span>“list”<\/span> id<\/span>=<\/span>“option1”<\/span>><\/span><\/div>\n
            <\/span><<\/span>label <\/span>for<\/span>=<\/span>“option1”<\/span>><\/span>Option<\/span> 1<\/span><<\/span>\/<\/span>label<\/span>><\/span><\/div>\n
        <\/span><<\/span>\/<\/span>li<\/span>><\/span><\/div>\n
        <\/span><<\/span>li<\/span>><\/span><\/div>\n
            <\/span><<\/span>input <\/span>type<\/span>=<\/span>“radio”<\/span> name<\/span>=<\/span>“list”<\/span> id<\/span>=<\/span>“option2”<\/span>><\/span><\/div>\n
            <\/span><<\/span>label <\/span>for<\/span>=<\/span>“option2”<\/span>><\/span>Option<\/span> 2<\/span><<\/span>\/<\/span>label<\/span>><\/span><\/div>\n
        <\/span><<\/span>\/<\/span>li<\/span>><\/span><\/div>\n
        <\/span><<\/span>li<\/span>><\/span><\/div>\n
            <\/span><<\/span>input <\/span>type<\/span>=<\/span>“radio”<\/span> name<\/span>=<\/span>“list”<\/span> id<\/span>=<\/span>“option3”<\/span>><\/span><\/div>\n
            <\/span><<\/span>label <\/span>for<\/span>=<\/span>“option3”<\/span>><\/span>Option<\/span> 3<\/span><<\/span>\/<\/span>label<\/span>><\/span><\/div>\n
        <\/span><<\/span>\/<\/span>li<\/span>><\/span><\/div>\n
    <<\/span>\/<\/span>ul<\/span>><\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

    CSS:<\/strong><\/p>\n

    \n
     <\/div>\n
    \n\n\n\n
    \n
    \n
    1<\/div>\n
    2<\/div>\n
    3<\/div>\n<\/div>\n<\/td>\n
    		\n
    \n
    :<\/span>indeterminate<\/span> +<\/span> label<\/span> {<\/span><\/div>\n
        <\/span>background<\/span>:<\/span> orange<\/span>;<\/span><\/div>\n
    }<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

    9 :valid<\/strong><\/p>\n

    :valid\u5339\u914d\u6761\u4ef6\u9a8c\u8bc1\u6b63\u786e\u7684\u8868\u5355\u5143\u7d20\u3002<\/p>\n

    \u5982\u4e0b\u4f8b\uff0c\u5f53email\u8f93\u5165\u6846\u5185\u7684\u503c\u7b26\u5408email\u683c\u5f0f\u65f6\uff0c\u8f93\u5165\u6846\u7684\u8fb9\u6846\u4f1a\u88ab\u8bbe\u4e3a\u7eff\u8272\u3002<\/p>\n

    HTML:<\/strong><\/p>\n

    \n
     <\/div>\n
    \n\n\n\n
    \n
    \n
    1<\/div>\n<\/div>\n<\/td>\n
    		\n
    \n
    <<\/span>input <\/span>type<\/span>=<\/span>“email”<\/span>\/<\/span>><\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

    CSS:<\/strong><\/p>\n

    \n
     <\/div>\n
    \n\n\n\n
    \n
    \n
    1<\/div>\n
    2<\/div>\n
    3<\/div>\n<\/div>\n<\/td>\n
    		\n
    \n
    input<\/span>[<\/span>type<\/span>=<\/span>email<\/span>]<\/span>:<\/span>valid<\/span> {<\/span><\/div>\n
        <\/span>border<\/span>:<\/span> 1px<\/span> solid <\/span>green<\/span>;<\/span><\/div>\n
    }<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

    10 :invalid<\/strong><\/p>\n

    :invalid\u4e0e:valid\u76f8\u53cd\uff0c\u5339\u914d\u6761\u4ef6\u9a8c\u8bc1\u9519\u8bef\u7684\u8868\u5355\u5143\u7d20\u3002<\/p>\n

    11 :optional<\/strong><\/p>\n

    :optional\u5339\u914d\u662f\u5177\u6709optional\u5c5e\u6027\u7684\u8868\u5355\u5143\u7d20\u3002\u5f53\u8868\u5355\u5143\u7d20\u6ca1\u6709\u8bbe\u7f6e\u4e3arequired\u65f6\uff0c\u5373\u4e3aoptional\u5c5e\u6027\u3002<\/p>\n

    \u5982\u4e0b\u4f8b\uff0c\u7b2c\u4e00\u4e2ainput\u7684\u80cc\u666f\u4e0d\u4f1a\u88ab\u8bbe\u4e3a\u9ec4\u8272\uff0c\u7b2c\u4e8c\u4e2ainput\u7684\u80cc\u666f\u4f1a\u88ab\u8bbe\u4e3a\u9ec4\u8272\u3002<\/p>\n

    HTML:<\/strong><\/p>\n

    \n
     <\/div>\n
    \n\n\n\n
    \n
    \n
    1<\/div>\n
    2<\/div>\n<\/div>\n<\/td>\n
    		\n
    \n
    <<\/span>input <\/span>type<\/span>=<\/span>“text”<\/span> required<\/span> \/<\/span>><\/span><\/div>\n
    <<\/span>input <\/span>type<\/span>=<\/span>“text”<\/span> \/<\/span>><\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

    CSS:<\/strong><\/p>\n

    \n
     <\/div>\n
    \n\n\n\n
    \n
    \n
    1<\/div>\n
    2<\/div>\n
    3<\/div>\n<\/div>\n<\/td>\n
    		\n
    \n
    :<\/span>optional<\/span> {<\/span><\/div>\n
        <\/span>background<\/span>:<\/span> yellow<\/span>;<\/span><\/div>\n
    }<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

    12 :required<\/strong><\/p>\n

    :required\u4e0e:optional\u76f8\u53cd\u5339\u914d\u8bbe\u7f6e\u4e86required\u5c5e\u6027\u7684\u8868\u5355\u5143\u7d20\u3002<\/p>\n

    13 :read-only<\/strong><\/p>\n

    :read-only\u5339\u914d\u8bbe\u7f6e\u4e86\u53ea\u8bfb\u5c5e\u6027\u7684\u5143\u7d20\uff0c\u8868\u5355\u5143\u7d20\u53ef\u4ee5\u901a\u8fc7\u8bbe\u7f6e\u201creadonly\u201d\u5c5e\u6027\u6765\u5b9a\u4e49\u5143\u7d20\u53ea\u8bfb\u3002<\/p>\n

    \u5982\u4e0b\u4f8b\uff0cinput\u5143\u7d20\u7684\u80cc\u666f\u4f1a\u88ab\u8bbe\u4e3a\u9ec4\u8272\u3002<\/p>\n

    HTML:<\/strong><\/p>\n

    \n
     <\/div>\n
    \n\n\n\n
    \n
    \n
    1<\/div>\n<\/div>\n<\/td>\n
    		\n
    \n
    <<\/span>input <\/span>type<\/span>=<\/span>“text”<\/span> value<\/span>=<\/span>“I am read only”<\/span> readonly<\/span>><\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

    CSS:<\/strong><\/p>\n

    \n
     <\/div>\n
    \n\n\n\n
    \n
    \n
    1<\/div>\n
    2<\/div>\n
    3<\/div>\n<\/div>\n<\/td>\n
    		\n
    \n
    input<\/span>:<\/span>read<\/span>–<\/span>only<\/span> {<\/span><\/div>\n
        <\/span>background<\/span>–<\/span>color<\/span>:<\/span> yellow<\/span>;<\/span><\/div>\n
    }<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

    14 :read-write<\/strong><\/p>\n

    :read-write\u5339\u914d\u5904\u4e8e\u7f16\u8f91\u72b6\u6001\u7684\u5143\u7d20\u3002input\uff0ctextarea\u548c\u8bbe\u7f6e\u4e86contenteditable\u7684HTML\u5143\u7d20\u83b7\u53d6\u7126\u70b9\u65f6\u5373\u5904\u4e8e\u7f16\u8f91\u72b6\u6001\u3002<\/p>\n

    \u5982\u4e0b\u4f8b\uff0cinput\u8f93\u5165\u6846\u548c\u5bcc\u6587\u672c\u6846\u83b7\u53d6\u7126\u70b9\u65f6\uff0c\u80cc\u666f\u53d8\u6210\u9ec4\u8272\u3002<\/p>\n

    HTML:<\/strong><\/p>\n

    \n
     <\/div>\n
    \n\n\n\n
    \n
    \n
    1<\/div>\n
    2<\/div>\n
    3<\/div>\n
    4<\/div>\n
    5<\/div>\n
    6<\/div>\n<\/div>\n<\/td>\n
    		\n
    \n
    <<\/span>input <\/span>type<\/span>=<\/span>“text”<\/span> value<\/span>=<\/span>“\u83b7\u53d6\u7126\u70b9\u65f6\u80cc\u666f\u53d8\u9ec4”<\/span>\/<\/span>><\/span><\/div>\n
     <\/div>\n
    <<\/span>div <\/span>class<\/span>=<\/span>“editable”<\/span> contenteditable<\/span>><\/span><\/div>\n
        <\/span><<\/span>h1<\/span>><\/span>\u70b9\u51fb\u8fd9\u91cc\u53ef\u4ee5\u7f16\u8f91<<\/span>\/<\/span>h1<\/span>><\/span><\/div>\n
        <\/span><<\/span>p<\/span>><\/span>\u83b7\u53d6\u7126\u70b9\u65f6\u80cc\u666f\u53d8\u9ec4<<\/span>\/<\/span>p<\/span>><\/span><\/div>\n
    <<\/span>\/<\/span>div<\/span>><\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

    CSS:<\/strong><\/p>\n

    \n
     <\/div>\n
    \n\n\n\n
    \n
    \n
    1<\/div>\n
    2<\/div>\n
    3<\/div>\n<\/div>\n<\/td>\n
    		\n
    \n
    :<\/span>read<\/span>–<\/span>write<\/span>:<\/span>focus<\/span> {<\/span><\/div>\n
        <\/span>background<\/span>:<\/span> yellow<\/span>;<\/span><\/div>\n
    }<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

    15 :scope(\u5904\u4e8e\u8bd5\u9a8c\u9636\u6bb5)<\/strong><\/p>\n

    :scope\u5339\u914d\u5904\u4e8estyle\u4f5c\u7528\u57df\u4e0b\u7684\u5143\u7d20\u3002\u5f53style\u6ca1\u6709\u8bbe\u7f6escope\u5c5e\u6027\u65f6\uff0cstyle\u5185\u7684\u6837\u5f0f\u4f1a\u5bf9\u6574\u4e2ahtml\u8d77\u4f5c\u7528\u3002<\/p>\n

    \u5982\u4e0b\u4f8b\uff0c\u7b2c\u4e8c\u4e2asection\u4e2d\u7684\u5143\u7d20\u7684\u6587\u672c\u4f1a\u53d8\u4e3a\u659c\u4f53\u3002<\/p>\n

    HTML:<\/strong><\/p>\n

    \n
     <\/div>\n
    \n\n\n\n
    \n
    \n
    1<\/div>\n
    2<\/div>\n
    3<\/div>\n
    4<\/div>\n
    5<\/div>\n
    6<\/div>\n
    7<\/div>\n
    8<\/div>\n
    9<\/div>\n
    10<\/div>\n
    11<\/div>\n
    12<\/div>\n
    13<\/div>\n
    14<\/div>\n
    15<\/div>\n<\/div>\n<\/td>\n
    		\n
    \n
    <<\/span>article<\/span>><\/span><\/div>\n
        <\/span><<\/span>section<\/span>><\/span><\/div>\n
            <\/span><<\/span>h1<\/span>><\/span>\u5f88\u6b63\u5e38\u7684\u4e00\u4e9b\u6587\u672c<<\/span>\/<\/span>h1<\/span>><\/span><\/div>\n
            <\/span><<\/span>p<\/span>><\/span>\u5f88\u6b63\u5e38\u7684\u4e00\u4e9b\u6587\u672c<<\/span>\/p><\/span><\/div>\n
        <\/s<\/span>ection<\/span>><\/span><\/div>\n
        <\/span><<\/span>section<\/span>><\/span><\/div>\n
            <\/span><style <\/span>scoped><\/span><\/div>\n
                :scope <\/span>{<\/span><\/div>\n
                    <\/span>font-style<\/span>:<\/span> italic<\/span>;<\/span><\/div>\n
                <\/span>}<\/span><\/div>\n
            <\/span><\/style><\/span><\/div>\n
            <\/span><<\/span>h1<\/span>><\/span>\u8fd9\u91cc\u7684\u6587\u672c\u662f\u659c\u4f53\u7684<<\/span>\/<\/span>h1<\/span>><\/span><\/div>\n
            <\/span><<\/span>p<\/span>><\/span>\u8fd9\u91cc\u7684\u6587\u672c\u662f\u659c\u4f53\u7684<<\/span>\/p><\/span><\/div>\n
        <\/s<\/span>ection<\/span>><\/span><\/div>\n
    <<\/span>\/<\/span>article<\/span>><\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

    \u6ce8\uff1a\u76ee\u524d\u652f\u6301\u8fd9\u4e2a\u4f2a\u7c7b\u7684\u6d4f\u89c8\u5668\u53ea\u6709\u706b\u72d0\u3002<\/p>\n

    \u8bed\u8a00\u76f8\u5173<\/strong><\/p>\n

    1 :dir(\u5904\u4e8e\u5b9e\u9a8c\u9636\u6bb5)<\/strong><\/p>\n

    :dir\u5339\u914d\u6307\u5b9a\u9605\u8bfb\u65b9\u5411\u7684\u5143\u7d20\uff0c\u5f53HTML\u5143\u7d20\u4e2d\u8bbe\u7f6e\u4e86dir\u5c5e\u6027\u65f6\u8be5\u4f2a\u7c7b\u624d\u80fd\u751f\u6548\u3002\u73b0\u65f6\u652f\u6301\u7684\u9605\u8bfb\u65b9\u5411\u6709\u4e24\u79cd\uff1altr\uff08\u4ece\u5de6\u5f80\u53f3\uff09\u548crtl\uff08\u4ece\u53f3\u5f80\u5de6\uff09\u3002\u76ee\u524d\uff0c\u53ea\u6709\u706b\u72d0\u6d4f\u89c8\u5668\u652f\u6301:dir\u4f2a\u7c7b\uff0c\u5e76\u5728\u706b\u72d0\u6d4f\u89c8\u5668\u4e2d\u4f7f\u7528\u65f6\u9700\u8981\u6dfb\u52a0\u524d\u7f00( -moz-dir() )\u3002<\/p>\n

    \u5982\u4e0b\u4f8b\uff0cp\u5143\u7d20\u4e2d\u7684\u963f\u62c9\u4f2f\u8bed\uff08\u963f\u62c9\u4f2f\u8bed\u662f\u4ece\u53f3\u5f80\u5de6\u9605\u8bfb\u7684\uff09\u6587\u672c\u4f1a\u53d8\u6210\u6a59\u8272\u3002<\/p>\n

    HTML:<\/strong><\/p>\n

    \n
     <\/div>\n
    \n\n\n\n
    \n
    \n
    1<\/div>\n
    2<\/div>\n
    3<\/div>\n<\/div>\n<\/td>\n
    		\n
    \n
    <<\/span>article <\/span>dir<\/span>=<\/span>“rtl”<\/span>><\/span><\/div>\n
    <<\/span>p<\/span>><\/span>\u0627\u0644\u062a\u062f\u0644\u064a\u0643 \u0648\u0627\u062d\u062f \u0645\u0646 \u0623\u0642\u062f\u0645 \u0627\u0644\u0639\u0644\u0648\u0645 \u0627\u0644\u0635\u062d\u064a\u0629 \u0627\u0644\u062a\u064a \u0639\u0631\u0641\u0647\u0627 \u0627\u0644\u0627\u0646\u0633\u0627\u0646 \u0648\u0627\u0644\u0630\u064a \u064a\u062a\u0645 \u0627\u0633\u062a\u062e\u062f\u0627\u0645\u0647 \u0644\u0623\u063a\u0631\u0627\u0636 \u0627\u0644\u0634\u0641\u0627\u0621 \u0645\u0646\u0630 \u0648\u0644\u0627\u062f\u0647 \u0627\u0644\u0637\u0641\u0644.<\/span><<\/span>\/<\/span>p<\/span>><\/span><\/div>\n
    <<\/span>\/<\/span>article<\/span>><\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

    CSS:<\/strong><\/p>\n

    \n
     <\/div>\n
    \n\n\n\n
    \n
    \n
    1<\/div>\n
    2<\/div>\n
    3<\/div>\n
    4<\/div>\n
    5<\/div>\n
    6<\/div>\n
    7<\/div>\n
    8<\/div>\n
    9<\/div>\n<\/div>\n<\/td>\n
    		\n
    \n
    \/* prefixed *\/<\/span><\/div>\n
    article<\/span> :<\/span>–<\/span>moz<\/span>–<\/span>dir<\/span>(<\/span>rtl<\/span>)<\/span> {<\/span><\/div>\n
        <\/span>color<\/span>:<\/span> orange<\/span>;<\/span><\/div>\n
    }<\/span><\/div>\n
     <\/div>\n
    \/* unprefixed *\/<\/span><\/div>\n
    article<\/span> :<\/span>dir<\/span>(<\/span>rtl<\/span>)<\/span> {<\/span><\/div>\n
        <\/span>color<\/span>:<\/span> orange<\/span>;<\/span><\/div>\n
    }<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

    \u5982\u4e0b\u4f8b\uff0cp\u5143\u7d20\u4e2d\u7684\u82f1\u8bed\u6587\u672c\u4f1a\u53d8\u6210\u84dd\u8272<\/p>\n

    HTML:<\/strong><\/p>\n

    \n
     <\/div>\n
    \n\n\n\n
    \n
    \n
    1<\/div>\n
    2<\/div>\n
    3<\/div>\n<\/div>\n<\/td>\n
    		\n
    \n
    <<\/span>article <\/span>dir<\/span>=<\/span>“ltr”<\/span>><\/span><\/div>\n
        <\/span><<\/span>p<\/span>><\/span>\u0627If<\/span> you <\/span>already <\/span>know <\/span>some <\/span>HTML <\/span>and<\/span> CSS <\/span>and<\/span> understand <\/span>the <\/span>principles <\/span>of <\/span>responsive <\/span>web <\/span>design<\/span>,<\/span> then<\/span> this<\/span> book <\/span>is<\/span> for<\/span> you<\/span>.<\/span><<\/span>\/<\/span>p<\/span>><\/span><\/div>\n
    <<\/span>\/<\/span>article<\/span>><\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

    CSS:<\/strong><\/p>\n

    \n
     <\/div>\n
    \n\n\n\n
    \n
    \n
    1<\/div>\n
    2<\/div>\n
    3<\/div>\n
    4<\/div>\n
    5<\/div>\n
    6<\/div>\n
    7<\/div>\n
    8<\/div>\n<\/div>\n<\/td>\n
    		\n
    \n
    article<\/span> :<\/span>–<\/span>moz<\/span>–<\/span>dir<\/span>(<\/span>ltr<\/span>)<\/span> {<\/span><\/div>\n
        <\/span>color<\/span>:<\/span> blue<\/span>;<\/span><\/div>\n
    }<\/span><\/div>\n
     <\/div>\n
    \/* unprefixed *\/<\/span><\/div>\n
    article<\/span> :<\/span>dir<\/span>(<\/span>ltr<\/span>)<\/span> {<\/span><\/div>\n
        <\/span>color<\/span>:<\/span> blue<\/span>;<\/span><\/div>\n
    }<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

    2 :lang<\/strong><\/p>\n

    :lang\u5339\u914d\u8bbe\u7f6e\u4e86\u7279\u5b9a\u8bed\u8a00\u7684\u5143\u7d20\uff0c\u8bbe\u7f6e\u7279\u5b9a\u8bed\u8a00\u53ef\u4ee5\u901a\u8fc7\u4e3a\u4e86HTML\u5143\u7d20\u8bbe\u7f6elang=\u201d\u201d\u5c5e\u6027\uff0c\u8bbe\u7f6emeta\u5143\u7d20\u7684charset=\u201d\u201d\u5c5e\u6027\uff0c\u6216\u8005\u662f\u5728http\u5934\u90e8\u4e0a\u8bbe\u7f6e\u8bed\u8a00\u5c5e\u6027\u3002<\/p>\n

    \u5b9e\u9645\u4e0a\uff0clang=\u201d\u201d\u5c5e\u6027\u4e0d\u53ea\u53ef\u4ee5\u5728html\u6807\u7b7e\u4e0a\u8bbe\u7f6e\uff0c\u4e5f\u53ef\u4ee5\u5728\u5176\u4ed6\u7684\u5143\u7d20\u4e0a\u8bbe\u7f6e\u3002<\/p>\n

    \u5982\u4e0b\u4f8b\uff0c\u5206\u522b\u7ed9\u4e0d\u540c\u7684\u8bed\u8a00\u8bbe\u7f6e\u4e0d\u540c\u7684\u5f15\u7528\u6837\u5f0f\uff1a<\/p>\n

    HTML:<\/strong><\/p>\n

    \n
     <\/div>\n
    \n\n\n\n
    \n
    \n
    1<\/div>\n
    2<\/div>\n
    3<\/div>\n
    4<\/div>\n
    5<\/div>\n
    6<\/div>\n
    7<\/div>\n
    8<\/div>\n
    9<\/div>\n<\/div>\n<\/td>\n
    		\n
    \n
    <<\/span>article <\/span>lang<\/span>=<\/span>“en”<\/span>><\/span><\/div>\n
        <\/span><<\/span>q<\/span>><\/span>Lorem <\/span>ipsum <\/span>dolor <\/span>sit <\/span>amet<\/span>.<\/span><<\/span>\/<\/span>q<\/span>><\/span><\/div>\n
    <<\/span>\/<\/span>article<\/span>><\/span><\/div>\n
    <<\/span>article <\/span>lang<\/span>=<\/span>“fr”<\/span>><\/span><\/div>\n
        <\/span><<\/span>q<\/span>><\/span>Lorem <\/span>ipsum <\/span>dolor <\/span>sit <\/span>amet<\/span>.<\/span><<\/span>\/<\/span>q<\/span>><\/span><\/div>\n
    <<\/span>\/<\/span>article<\/span>><\/span><\/div>\n
    <<\/span>article <\/span>lang<\/span>=<\/span>“de”<\/span>><\/span><\/div>\n
        <\/span><<\/span>q<\/span>><\/span>Lorem <\/span>ipsum <\/span>dolor <\/span>sit <\/span>amet<\/span>.<\/span><<\/span>\/<\/span>q<\/span>><\/span><\/div>\n
    <<\/span>\/<\/span>article<\/span>><\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

    CSS:<\/strong><\/p>\n

    \n
     <\/div>\n
    \n\n\n\n
    \n
    \n
    1<\/div>\n
    2<\/div>\n
    3<\/div>\n<\/div>\n<\/td>\n
    		\n
    \n
    :<\/span>lang<\/span>(<\/span>en<\/span>)<\/span> q<\/span> {<\/span> quotes<\/span>:<\/span> ‘\u201c’<\/span> ‘\u201d’<\/span>;<\/span> }<\/span><\/div>\n
    :<\/span>lang<\/span>(<\/span>fr<\/span>)<\/span> q<\/span> {<\/span> quotes<\/span>:<\/span> ‘\u00ab’<\/span> ‘\u00bb’<\/span>;<\/span> }<\/span><\/div>\n
    :<\/span>lang<\/span>(<\/span>de<\/span>)<\/span> q<\/span> {<\/span> quotes<\/span>:<\/span> ‘\u00bb’<\/span> ‘\u00ab’<\/span>;<\/span> }<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

    \u5176\u4ed6<\/strong><\/p>\n

    1 :root<\/strong><\/p>\n

    :root\u5339\u914d\u6587\u6863\u7684\u6839\u5143\u7d20\u3002\u4e00\u822c\u7684html\u6587\u4ef6\u7684\u6839\u5143\u7d20\u662fhtml\u5143\u7d20\uff0c\u800cSVG\u6216XML\u6587\u4ef6\u7684\u6839\u5143\u7d20\u5219\u53ef\u80fd\u662f\u5176\u4ed6\u5143\u7d20\u3002<\/p>\n

    \u5982\u4e0b\u4f8b\uff0c\u5c06html\u5143\u7d20\u7684\u80cc\u666f\u8bbe\u7f6e\u4e3a\u6a59\u8272<\/p>\n

    \n
     <\/div>\n
    \n\n\n\n
    \n
    \n
    1<\/div>\n
    2<\/div>\n
    3<\/div>\n<\/div>\n<\/td>\n
    		\n
    \n
    :<\/span>root<\/span> {<\/span><\/div>\n
        <\/span>background<\/span>:<\/span> orange<\/span>;<\/span><\/div>\n
    }<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

    2.:fullscreen<\/strong><\/p>\n

    :fullscreen\u5339\u914d\u5904\u4e8e\u5168\u5c4f\u6a21\u5f0f\u4e0b\u7684\u5143\u7d20\u3002\u5168\u5c4f\u6a21\u5f0f\u4e0d\u662f\u901a\u8fc7\u6309F11\u6765\u6253\u5f00\u7684\u5168\u5c4f\u6a21\u5f0f\uff0c\u800c\u662f\u901a\u8fc7Javascript\u7684Fullscreen API\u6765\u6253\u5f00\u7684\uff0c\u4e0d\u540c\u7684\u6d4f\u89c8\u5668\u6709\u4e0d\u540c\u7684Fullscreen API\u3002\u76ee\u524d\uff0c:fullscreen\u9700\u8981\u6dfb\u52a0\u524d\u7f00\u624d\u80fd\u4f7f\u7528\u3002<\/p>\n

    \u5982\u4e0b\u4f8b\uff0c\u5f53\u5904\u4e8e\u5168\u5c4f\u6a21\u5f0f\u65f6\uff0ch1\u5143\u7d20\u7684\u80cc\u666f\u4f1a\u53d8\u6210\u6a59\u8272<\/p>\n

    HTML:<\/strong><\/p>\n

    \n
     <\/div>\n
    \n\n\n\n
    \n
    \n
    1<\/div>\n
    2<\/div>\n<\/div>\n<\/td>\n
    		\n
    \n
    <<\/span>h1 <\/span>id<\/span>=<\/span>“element”<\/span>><\/span>\u5728\u5168\u5c4f\u6a21\u5f0f\u4e0b\uff0c\u8fd9\u91cc\u7684\u6587\u672c\u7684\u80cc\u666f\u4f1a\u53d8\u6210\u6a59\u8272.<\/span><<\/span>\/<\/span>h1<\/span>><\/span><\/div>\n
    <<\/span>button<\/span>><\/span>\u8fdb\u5165\u5168\u5c4f\u6a21\u5f0f!<\/span><<\/span>\/<\/span>button<\/span>><\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

    JAVASCRIPT:<\/strong><\/p>\n

    \n
     <\/div>\n
    \n\n\n\n
    \n
    \n
    1<\/div>\n
    2<\/div>\n
    3<\/div>\n
    4<\/div>\n
    5<\/div>\n
    6<\/div>\n
    7<\/div>\n
    8<\/div>\n
    9<\/div>\n
    10<\/div>\n
    11<\/div>\n
    12<\/div>\n
    13<\/div>\n
    14<\/div>\n<\/div>\n<\/td>\n
    		\n
    \n
    var<\/span> docelem<\/span> =<\/span> document<\/span>.<\/span>getElementById<\/span>(<\/span>‘element’<\/span>)<\/span>;<\/span><\/div>\n
    var<\/span> button<\/span> =<\/span> document<\/span>.<\/span>querySelector<\/span>(<\/span>‘button’<\/span>)<\/span>;<\/span><\/div>\n
    button<\/span>.<\/span>onclick<\/span> =<\/span> function<\/span>(<\/span>)<\/span> {<\/span><\/div>\n
     <\/div>\n
        <\/span>if<\/span> (<\/span>docelem<\/span>.<\/span>requestFullscreen<\/span>)<\/span> {<\/span><\/div>\n
            <\/span>docelem<\/span>.<\/span>requestFullscreen<\/span>(<\/span>)<\/span>;<\/span><\/div>\n
        <\/span>}<\/span>else<\/span> if<\/span> (<\/span>docelem<\/span>.<\/span>webkitRequestFullscreen<\/span>)<\/span> {<\/span><\/div>\n
            <\/span>docelem<\/span>.<\/span>webkitRequestFullscreen<\/span>(<\/span>)<\/span>;<\/span><\/div>\n
        <\/span>}<\/span> else<\/span> if<\/span>(<\/span>docelem<\/span>.<\/span>mozRequestFullScreen<\/span>)<\/span> {<\/span><\/div>\n
            <\/span>docelem<\/span>.<\/span>mozRequestFullScreen<\/span>(<\/span>)<\/span>;<\/span><\/div>\n
        <\/span>}<\/span> else<\/span> if<\/span>(<\/span>docelem<\/span>.<\/span>msRequestFullscreen<\/span>)<\/span> {<\/span><\/div>\n
            <\/span>docelem<\/span>.<\/span>msRequestFullscreen<\/span>(<\/span>)<\/span>;<\/span><\/div>\n
        <\/span>}<\/span><\/div>\n
    }<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

    CSS:<\/strong><\/p>\n

    \n
     <\/div>\n
    \n\n\n\n
    \n
    \n
    1<\/div>\n
    2<\/div>\n
    3<\/div>\n
    4<\/div>\n
    5<\/div>\n
    6<\/div>\n
    7<\/div>\n
    8<\/div>\n
    9<\/div>\n
    10<\/div>\n
    11<\/div>\n
    12<\/div>\n
    13<\/div>\n
    14<\/div>\n
    15<\/div>\n<\/div>\n<\/td>\n
    		\n
    \n
    h1<\/span>:<\/span>fullscreen<\/span> {<\/span><\/div>\n
        <\/span>background<\/span>:<\/span> orange<\/span>;<\/span><\/div>\n
    }<\/span><\/div>\n
     <\/div>\n
    h1<\/span>:<\/span>–<\/span>webkit<\/span>–<\/span>full<\/span>–<\/span>screen<\/span> {<\/span><\/div>\n
        <\/span>background<\/span>:<\/span> orange<\/span>;<\/span><\/div>\n
    }<\/span><\/div>\n
     <\/div>\n
    h1<\/span>:<\/span>–<\/span>moz<\/span>–<\/span>full<\/span>–<\/span>screen<\/span> {<\/span><\/div>\n
        <\/span>background<\/span>:<\/span> orange<\/span>;<\/span><\/div>\n
    }<\/span><\/div>\n
     <\/div>\n
    h1<\/span>:<\/span>–<\/span>ms<\/span>–<\/span>fullscreen<\/span> {<\/span><\/div>\n
        <\/span>background<\/span>:<\/span> orange<\/span>;<\/span><\/div>\n
    }<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

     <\/p>\n

    \u4f2a\u5143\u7d20<\/strong><\/p>\n

    1 ::before\/:before<\/strong><\/p>\n

    :before\u5728\u88ab\u9009\u5143\u7d20\u524d\u63d2\u5165\u5185\u5bb9\u3002\u9700\u8981\u4f7f\u7528content\u5c5e\u6027\u6765\u6307\u5b9a\u8981\u63d2\u5165\u7684\u5185\u5bb9\u3002\u88ab\u63d2\u5165\u7684\u5185\u5bb9\u5b9e\u9645\u4e0a\u4e0d\u5728\u6587\u6863\u6811\u4e2d\u3002<\/p>\n

    HTML:<\/strong><\/p>\n

    \n
     <\/div>\n
    \n\n\n\n
    \n
    \n
    1<\/div>\n<\/div>\n<\/td>\n
    		\n
    \n
    <<\/span>h1<\/span>><\/span>World<\/span><<\/span>\/<\/span>h1<\/span>><\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

    CSS:<\/strong><\/p>\n

    \n
     <\/div>\n
    \n\n\n\n
    \n
    \n
    1<\/div>\n
    2<\/div>\n
    3<\/div>\n<\/div>\n<\/td>\n
    		\n
    \n
    h1<\/span>:<\/span>before<\/span> {<\/span><\/div>\n
        <\/span>content<\/span>:<\/span> “Hello “<\/span>;<\/span><\/div>\n
    }<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

    2 ::after\/:after<\/strong><\/p>\n

    :after\u5728\u88ab\u5143\u7d20\u540e\u63d2\u5165\u5185\u5bb9\uff0c\u5176\u7528\u6cd5\u548c\u7279\u6027\u4e0e:before\u76f8\u4f3c\u3002<\/p>\n

    3 ::first-letter\/:first-letter<\/strong><\/p>\n

    :first-letter\u5339\u914d\u5143\u7d20\u4e2d\u6587\u672c\u7684\u9996\u5b57\u6bcd\u3002\u88ab\u4fee\u9970\u7684\u9996\u5b57\u6bcd\u4e0d\u5728\u6587\u6863\u6811\u4e2d\u3002<\/p>\n

    CSS:<\/strong><\/p>\n

    \n
     <\/div>\n
    \n\n\n\n
    \n
    \n
    1<\/div>\n
    2<\/div>\n
    3<\/div>\n<\/div>\n<\/td>\n
    		\n
    \n
    h1<\/span>:<\/span>first<\/span>–<\/span>letter<\/span>  <\/span>{<\/span><\/div>\n
        <\/span>font<\/span>–<\/span>size<\/span>:<\/span> 5em<\/span>;<\/span><\/div>\n
    }<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

    4 ::first-line\/:first-line<\/strong><\/p>\n

    :first-line\u5339\u914d\u5143\u7d20\u4e2d\u7b2c\u4e00\u884c\u7684\u6587\u672c\u3002\u8fd9\u4e2a\u4f2a\u5143\u7d20\u53ea\u80fd\u7528\u5728\u5757\u5143\u7d20\u4e2d\uff0c\u4e0d\u80fd\u7528\u5728\u5185\u8054\u5143\u7d20\u4e2d\u3002<\/p>\n

    CSS:<\/strong><\/p>\n

    \n
     <\/div>\n
    \n\n\n\n
    \n
    \n
    1<\/div>\n
    2<\/div>\n
    3<\/div>\n<\/div>\n<\/td>\n
    		\n
    \n
    p<\/span>:<\/span>first<\/span>–<\/span>line<\/span> {<\/span><\/div>\n
        <\/span>background<\/span>:<\/span> orange<\/span>;<\/span><\/div>\n
    }<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

    5 ::selection<\/strong><\/p>\n

    ::selection\u5339\u914d\u7528\u6237\u88ab\u7528\u6237\u9009\u4e2d\u6216\u8005\u5904\u4e8e\u9ad8\u4eae\u72b6\u6001\u7684\u90e8\u5206\u3002\u5728\u706b\u72d0\u6d4f\u89c8\u5668\u4f7f\u7528\u65f6\u9700\u8981\u6dfb\u52a0-moz\u524d\u7f00\u3002\u8be5\u4f2a\u5143\u7d20\u53ea\u652f\u6301\u53cc\u5192\u53f7\u7684\u5f62\u5f0f\u3002<\/p>\n

    CSS:<\/strong><\/p>\n

    \n
     <\/div>\n
    \n\n\n\n
    \n
    \n
    1<\/div>\n
    2<\/div>\n
    3<\/div>\n
    4<\/div>\n
    5<\/div>\n
    6<\/div>\n
    7<\/div>\n
    8<\/div>\n
    9<\/div>\n<\/div>\n<\/td>\n
    		\n
    \n
    ::<\/span>–<\/span>moz<\/span>–<\/span>selection<\/span> {<\/span><\/div>\n
        <\/span>color<\/span>:<\/span> orange<\/span>;<\/span><\/div>\n
        <\/span>background<\/span>:<\/span> #<\/span>333<\/span>;<\/span><\/div>\n
    }<\/span><\/div>\n
     <\/div>\n
    ::<\/span>selection<\/span>  <\/span>{<\/span><\/div>\n
        <\/span>color<\/span>:<\/span> orange<\/span>;<\/span><\/div>\n
        <\/span>background<\/span>:<\/span> #<\/span>333<\/span>;<\/span><\/div>\n
    }<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

    6 ::placeholder<\/strong><\/p>\n

    ::placeholder\u5339\u914d\u5360\u4f4d\u7b26\u7684\u6587\u672c\uff0c\u53ea\u6709\u5143\u7d20\u8bbe\u7f6e\u4e86placeholder\u5c5e\u6027\u65f6\uff0c\u8be5\u4f2a\u5143\u7d20\u624d\u80fd\u751f\u6548\u3002<\/p>\n

    \u8be5\u4f2a\u5143\u7d20\u4e0d\u662fCSS\u7684\u6807\u51c6\uff0c\u5b83\u7684\u5b9e\u73b0\u53ef\u80fd\u5728\u5c06\u6765\u4f1a\u6709\u6240\u6539\u53d8\uff0c\u6240\u4ee5\u8981\u51b3\u5b9a\u4f7f\u7528\u65f6\u5fc5\u987b\u8c28\u614e\u3002<\/p>\n

    \u5728\u4e00\u4e9b\u6d4f\u89c8\u5668\u4e2d\uff08IE10\u548cFirefox18\u53ca\u5176\u4ee5\u4e0b\u7248\u672c\uff09\u4f1a\u4f7f\u7528\u5355\u5192\u53f7\u7684\u5f62\u5f0f\u3002<\/p>\n

    HTML:<\/strong><\/p>\n

    \n
     <\/div>\n
    \n\n\n\n
    \n
    \n
    1<\/div>\n<\/div>\n<\/td>\n
    		\n
    \n
    <<\/span>input <\/span>type<\/span>=<\/span>“email”<\/span> placeholder<\/span>=<\/span>“name@domain.com”<\/span>><\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

    CSS:<\/strong><\/p>\n

    \n
     <\/div>\n
    \n\n\n\n
    \n
    \n
    1<\/div>\n
    2<\/div>\n
    3<\/div>\n
    4<\/div>\n
    5<\/div>\n
    6<\/div>\n
    7<\/div>\n
    8<\/div>\n
    9<\/div>\n
    10<\/div>\n
    11<\/div>\n
    12<\/div>\n
    13<\/div>\n
    14<\/div>\n
    15<\/div>\n
    16<\/div>\n
    17<\/div>\n<\/div>\n<\/td>\n
    		\n
    \n
    input<\/span>::<\/span>–<\/span>moz<\/span>–<\/span>placeholder<\/span> {<\/span><\/div>\n
        <\/span>color<\/span>:<\/span>#<\/span>666<\/span>;<\/span><\/div>\n
    }<\/span><\/div>\n
     <\/div>\n
    input<\/span>::<\/span>–<\/span>webkit<\/span>–<\/span>input<\/span>–<\/span>placeholder<\/span> {<\/span><\/div>\n
        <\/span>color<\/span>:<\/span>#<\/span>666<\/span>;<\/span><\/div>\n
    }<\/span><\/div>\n
     <\/div>\n
    \/* IE 10 only *\/<\/span><\/div>\n
    input<\/span>:<\/span>–<\/span>ms<\/span>–<\/span>input<\/span>–<\/span>placeholder<\/span> {<\/span><\/div>\n
        <\/span>color<\/span>:<\/span>#<\/span>666<\/span>;<\/span><\/div>\n
    }<\/span><\/div>\n
     <\/div>\n
    \/* Firefox 18 and below *\/<\/span><\/div>\n
    input<\/span>:<\/span>–<\/span>moz<\/span>–<\/span>input<\/span>–<\/span>placeholder<\/span> {<\/span><\/div>\n
        <\/span>color<\/span>:<\/span>#<\/span>666<\/span>;<\/span><\/div>\n
    }<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

    7 ::backdrop(\u5904\u4e8e\u8bd5\u9a8c\u9636\u6bb5)<\/strong><\/p>\n

    ::backdrop\u7528\u4e8e\u6539\u53d8\u5168\u5c4f\u6a21\u5f0f\u4e0b\u7684\u80cc\u666f\u989c\u8272\uff0c\u5168\u5c4f\u6a21\u5f0f\u7684\u9ed8\u8ba4\u989c\u8272\u4e3a\u9ed1\u8272\u3002\u8be5\u4f2a\u5143\u7d20\u53ea\u652f\u6301\u53cc\u5192\u53f7\u7684\u5f62\u5f0f<\/p>\n

    HTML:<\/strong><\/p>\n

    \n
     <\/div>\n
    \n\n\n\n
    \n
    \n
    1<\/div>\n
    2<\/div>\n<\/div>\n<\/td>\n
    		\n
    \n
    <<\/span>h1 <\/span>id<\/span>=<\/span>“element”<\/span>><\/span>This<\/span> heading <\/span>will <\/span>have<\/span> a<\/span> solid <\/span>background <\/span>color <\/span>in<\/span> full<\/span>–<\/span>screen <\/span>mode<\/span>.<\/span><<\/span>\/<\/span>h1<\/span>><\/span><\/div>\n
    <<\/span>button <\/span>onclick<\/span>=<\/span>“var el = document.getElementById(‘element’); el.webkitRequestFullscreen();”<\/span>><\/span>Trigger <\/span>full <\/span>screen<\/span>!<\/span><<\/span>\/<\/span>button<\/span>><\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

    CSS:<\/strong><\/p>\n

    \n
     <\/div>\n
    \n\n\n\n
    \n
    \n
    1<\/div>\n
    2<\/div>\n
    3<\/div>\n<\/div>\n<\/td>\n
    		\n
    \n
    h1<\/span>:<\/span>fullscreen<\/span>::<\/span>backdrop<\/span> {<\/span><\/div>\n
        <\/span>background<\/span>:<\/span> orange<\/span>;<\/span><\/div>\n
    }<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

    \u53c2\u8003\u6587\u7ae0<\/strong><\/p>\n

    1. An Ultimate Guide To CSS Pseudo-Classes And Pseudo-Elements<\/a><\/p>\n

    2. CSS\u4f2a\u7c7b\u4e0eCSS\u4f2a\u5143\u7d20\u7684\u533a\u522b\u53ca\u7531\u6765<\/a><\/p>\n<\/div>\n<\/div>\n

    \n

    \u539f\u521b\u6587\u7ae0\u8f6c\u8f7d\u8bf7\u6ce8\u660e\uff1a<\/p>\n

    \u8f6c\u8f7d\u81eaAlloyTeam\uff1ahttp:\/\/www.alloyteam.com\/2016\/05\/summary-of-pseudo-classes-and-pseudo-elements\/<\/a><\/p>\n<\/div>\n

     <\/div>\n","protected":false},"excerpt":{"rendered":"

    \u719f\u6089\u524d\u7aef\u7684\u4eba\u90fd\u4f1a\u542c\u8fc7css\u7684\u4f2a\u7c7b\u4e0e\u4f2a\u5143\u7d20\uff0c\u7136\u800c\u5927\u591a\u6570\u7684\u4eba\u90fd\u4f1a\u5c06\u8fd9\u4e24\u8005\u6df7\u6dc6\u3002\u672c\u6587\u4ece\u89e3\u6790\u4f2a\u7c7b\u4e0e\u4f2a\u5143\u7d20\u7684\u542b\u4e49\u51fa\u53d1\uff0c\u533a […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"class_list":["post-3510","post","type-post","status-publish","format-standard","hentry","category-4"],"_links":{"self":[{"href":"https:\/\/www.gaigaiming.com\/index.php\/wp-json\/wp\/v2\/posts\/3510","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.gaigaiming.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.gaigaiming.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.gaigaiming.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.gaigaiming.com\/index.php\/wp-json\/wp\/v2\/comments?post=3510"}],"version-history":[{"count":0,"href":"https:\/\/www.gaigaiming.com\/index.php\/wp-json\/wp\/v2\/posts\/3510\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.gaigaiming.com\/index.php\/wp-json\/wp\/v2\/media?parent=3510"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.gaigaiming.com\/index.php\/wp-json\/wp\/v2\/categories?post=3510"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.gaigaiming.com\/index.php\/wp-json\/wp\/v2\/tags?post=3510"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}