{"id":38,"date":"2023-07-20T02:15:01","date_gmt":"2023-07-19T18:15:01","guid":{"rendered":"http:\/\/iwebg.cn\/?p=38"},"modified":"2023-07-20T02:15:02","modified_gmt":"2023-07-19T18:15:02","slug":"2022%e5%b9%b4%e6%9f%90%e4%b9%8e%e9%9d%a2%e8%af%95%e9%a2%98css%e9%83%a8%e5%88%86%ef%bc%89","status":"publish","type":"post","link":"http:\/\/iwebg.cn\/index.php\/2023\/07\/20\/2022%e5%b9%b4%e6%9f%90%e4%b9%8e%e9%9d%a2%e8%af%95%e9%a2%98css%e9%83%a8%e5%88%86%ef%bc%89\/","title":{"rendered":"2022\u5e74\u67d0\u4e4e\u9762\u8bd5\u9898(CSS\u90e8\u5206\uff09"},"content":{"rendered":"\n<h3 class=\"wp-block-heading\">1.css\u5e03\u5c40\u65b9\u5f0f<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>1\u3001table\u5e03\u5c40\uff08\u73b0\u5728\u5c11\u7528\uff09\n\n2\u3001flex\u5e03\u5c40\n\n3\u3001float\u5e03\u5c40\n\n4\u3001\u54cd\u5e94\u5f0f\u5e03\u5c40<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">2.\u8bf4\u4e00\u4e0b\u76d2\u5b50\u6a21\u578b\uff08\u5e38\u95ee\uff09<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>\u6807\u51c6\u548c\u6a21\u578b\u548cIE\u76d2\u5b50\u6a21\u578b\n\n\u8fd9\u4e24\u4e2a\u7684\u533a\u522b\u4e3b\u8981\u662f\n\nIE\u76d2\u5b50\u6a21\u578b\u7684\u5bbd\u9ad8\u5305\u62eccontent\u548cpadding\u8fd8\u6709border\uff0c\u6807\u51c6\u76d2\u5b50\u6a21\u578b \u4e0d\u5305\u62ec\uff0c\n\nbox-sizing:content-box \u6807\u51c6\u76d2\u6a21\u578b\n\nbox-sizing:border-box IE\u76d2\u6a21\u578b<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">3.Html5\u65b0\u6807\u7b7e<\/h3>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">|\u6807\u7b7e|\u63cf\u8ff0|<br>|-|-|<br>|canvas|\u6807\u7b7e\u5b9a\u4e49\u56fe\u5f62\uff0c\u6bd4\u5982\u56fe\u8868\u548c\u5176\u4ed6\u56fe\u50cf\u3002\u8be5\u6807\u7b7e\u57fa\u4e8e JavaScript \u7684\u7ed8\u56fe API|<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">\u65b0\u591a\u5a92\u4f53\u5143\u7d20<\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">|\u6807\u7b7e|\u63cf\u8ff0|<br>|-|-|<br>|audio|\u5b9a\u4e49\u97f3\u9891\u5185\u5bb9|<br>|video|\u5b9a\u4e49\u89c6\u9891\uff08video \u6216\u8005 movie\uff09|<br>|source|\u5b9a\u4e49\u591a\u5a92\u4f53\u8d44\u6e90 video \u548c audio|<br>|embed|\u5b9a\u4e49\u5d4c\u5165\u7684\u5185\u5bb9\uff0c\u6bd4\u5982\u63d2\u4ef6\u3002|<br>|track|\u4e3a\u8bf8\u5982 video \u548c audio \u5143\u7d20\u4e4b\u7c7b\u7684\u5a92\u4ecb\u89c4\u5b9a\u5916\u90e8\u6587\u672c\u8f68\u9053\u3002|<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">\u65b0\u591a\u5a92\u4f53\u5143\u7d20<br><img decoding=\"async\" src=\"http:\/\/apia.zlhranhou.com\/index.php\/api\/download?file_id=29\" alt=\"Description\"><\/p>\n<\/blockquote>\n\n\n\n<h3 class=\"wp-block-heading\">4.\u4ec0\u4e48\u662fBFC<\/h3>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">BFC\uff08Block Formatting Context\uff09\uff0c\u5373\u5757\u7ea7\u683c\u5f0f\u5316\u4e0a\u4e0b\u6587\uff0c\u5b83\u662f\u9875\u9762\u4e2d\u4e00\u4e2a\u72ec\u7acb\u7684\u5bb9\u5668\uff0c\u5bb9\u5668\u4e2d\u7684\u5143\u7d20\u4e0d\u4f1a\u5f71\u54cd\u5230\u5916\u9762\u7684\u5143\u7d20<\/p>\n<\/blockquote>\n\n\n\n<pre class=\"wp-block-code\"><code>\u89e6\u53d1\u6761\u4ef6\n\u89e6\u53d1BFC\u7684\u6761\u4ef6\u5305\u542b\u4e0d\u9650\u4e8e\uff1a\n\n\u6839\u5143\u7d20\uff0c\u5373HTML\u5143\u7d20\n\u6d6e\u52a8\u5143\u7d20\uff1afloat\u503c\u4e3aleft\u3001right\noverflow\u503c\u4e0d\u4e3a visible\uff0c\u4e3a auto\u3001scroll\u3001hidden\ndisplay\u7684\u503c\u4e3ainline-block\u3001inltable-cell\u3001table-caption\u3001table\u3001inline-table\u3001flex\u3001inline-flex\u3001grid\u3001inline-grid\nposition\u7684\u503c\u4e3aabsolute\u6216fixed<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">5.\u6d4f\u89c8\u5668\u8fd0\u884c\u673a\u5236<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>1\u3001\u521b\u5efaDOM\u6811\n\n2\u3001\u6784\u5efa\u6e32\u67d3\u6811\uff0cCSS\u6e32\u67d3\n\n3\u3001\u5e03\u5c40\u6e32\u67d3\uff0c\u6bcf\u4e2a\u5143\u7d20\u7684\u5927\u5c0f\u3001\u4f4d\u7f6e\n\n4\u3001\u7ed8\u5236\u6e32\u67d3\u6811\u3001\u518d\u753b\u51fa\u6765\n\n\u91cd\u7ed8\uff1a\u6539\u53d8\u5143\u7d20\u7684\u5916\u89c2\u5c5e\u6027\u4f8b\u5982div\u7684color\u3001background-color\u3001\u7b49\u5c5e\u6027\u53d1\u751f\u6539\u53d8\u65f6\n\n\u91cd\u6392\uff08\u56de\u6d41\uff09\uff1a\u5143\u7d20\u7684\u89c4\u6a21\u5c3a\u5bf8\u3001\u5e03\u5c40\u3001\u9690\u85cf\u6539\u53d8\u65f6\n\n\u4ee3\u4ef7\uff1a\u8017\u65f6\uff0c\u5bfc\u81f4\u6d4f\u89c8\u5668\u5361\u6162<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">6.\u5c45\u4e2d\u7684\u65b9\u5f0f<\/h3>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">\u5782\u76f4\u5c45\u4e2d\u7684\u65b9\u5f0f<\/p>\n<\/blockquote>\n\n\n\n<pre class=\"wp-block-code\"><code>\u884c\u9ad8=\u9ad8\n\n\u7edd\u5bf9\u5b9a\u4f4d top50%\uff0c\u81ea\u8eab\u5bbd\u5ea6\u768450%\u7684\u8d1f\u503c\n\nflex\u5e03\u5c40 align---center<\/code><\/pre>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">\u6c34\u5e73\u5c45\u4e2d\u7684\u65b9\u5f0f<\/p>\n<\/blockquote>\n\n\n\n<pre class=\"wp-block-code\"><code>\u7edd\u5bf9\u5b9a\u4f4d\n\n margin: 0 auto;\n\nflex\u5e03\u5c40 juest---center\n\ntext-align center<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">7.rem\u3001em\u3001vh\u3001px\u5404\u81ea\u4ee3\u8868\u7684\u542b\u4e49\uff1f<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>px\uff1a\u7edd\u5bf9\u5355\u4f4d\uff0c\u9875\u9762\u6309\u7cbe\u786e\u50cf\u7d20\u5c55\u793a\n\nem\uff1a\u76f8\u5bf9\u5355\u4f4d\uff0c\u57fa\u51c6\u70b9\u4e3a\u7236\u8282\u70b9\u5b57\u4f53\u7684\u5927\u5c0f\uff0c\u5982\u679c\u81ea\u8eab\u5b9a\u4e49\u4e86font-size\u6309\u81ea\u8eab\u6765\u8ba1\u7b97\uff0c\u6574\u4e2a\u9875\u9762\u51851em\u4e0d\u662f\u4e00\u4e2a\u56fa\u5b9a\u7684\u503c\n\nrem\uff1a\u76f8\u5bf9\u5355\u4f4d\uff0c\u53ef\u7406\u89e3\u4e3aroot em, \u76f8\u5bf9\u6839\u8282\u70b9html\u7684\u5b57\u4f53\u5927\u5c0f\u6765\u8ba1\u7b97\n\nvh\u3001vw\uff1a\u4e3b\u8981\u7528\u4e8e\u9875\u9762\u89c6\u53e3\u5927\u5c0f\u5e03\u5c40\uff0c\u5728\u9875\u9762\u5e03\u5c40\u4e0a\u66f4\u52a0\u65b9\u4fbf\u7b80\u5355<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">8.\u6709\u54ea\u4e9b\u65b9\u5f0f\u53ef\u4ee5\u9690\u85cf\u9875\u9762\u5143\u7d20\uff1f\u533a\u522b?<\/h3>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">\u901a\u8fc7css\u5b9e\u73b0\u9690\u85cf\u5143\u7d20\u65b9\u6cd5\u6709\u5982\u4e0b\uff1a<\/p>\n<\/blockquote>\n\n\n\n<pre class=\"wp-block-code\"><code>display:none\nvisibility:hidden\nopacity:0\n\/\/ \u8bbe\u7f6eheight\u3001width\u6a21\u578b\u5c5e\u6027\u4e3a0\nposition:absolute\nclip-path<\/code><\/pre>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">\u533a\u522b<br><img decoding=\"async\" src=\"http:\/\/apia.zlhranhou.com\/index.php\/api\/download?file_id=30\" alt=\"Description\"><\/p>\n<\/blockquote>\n\n\n\n<h3 class=\"wp-block-heading\">9.\u4ec0\u4e48\u662f\u54cd\u5e94\u5f0f\u8bbe\u8ba1\uff1f\u54cd\u5e94\u5f0f\u8bbe\u8ba1\u7684\u57fa\u672c\u539f\u7406\u662f\u4ec0\u4e48\uff1f\u5982\u4f55\u505a\uff1f<\/h3>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">\u54cd\u5e94\u5f0f\u7f51\u7ad9\u8bbe\u8ba1\uff08Responsive Web design\uff09\u662f\u4e00\u79cd\u7f51\u7edc\u9875\u9762\u8bbe\u8ba1\u5e03\u5c40\uff0c\u9875\u9762\u7684\u8bbe\u8ba1\u4e0e\u5f00\u53d1\u5e94\u5f53\u6839\u636e\u7528\u6237\u884c\u4e3a\u4ee5\u53ca\u8bbe\u5907\u73af\u5883(\u7cfb\u7edf\u5e73\u53f0\u3001\u5c4f\u5e55\u5c3a\u5bf8\u3001\u5c4f\u5e55\u5b9a\u5411\u7b49)\u8fdb\u884c\u76f8\u5e94\u7684\u54cd\u5e94\u548c\u8c03\u6574<br>\u54cd\u5e94\u5f0f\u7f51\u7ad9\u5e38\u89c1\u7279\u70b9\uff1a<\/p>\n<\/blockquote>\n\n\n\n<pre class=\"wp-block-code\"><code>\u540c\u65f6\u9002\u914dPC + \u5e73\u677f + \u624b\u673a\u7b49\n\u6807\u7b7e\u5bfc\u822a\u5728\u63a5\u8fd1\u624b\u6301\u7ec8\u7aef\u8bbe\u5907\u65f6\u6539\u53d8\u4e3a\u7ecf\u5178\u7684\u62bd\u5c49\u5f0f\u5bfc\u822a\n\u7f51\u7ad9\u7684\u5e03\u5c40\u4f1a\u6839\u636e\u89c6\u53e3\u6765\u8c03\u6574\u6a21\u5757\u7684\u5927\u5c0f\u548c\u4f4d\u7f6e<\/code><\/pre>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">\u5b9e\u73b0\u54cd\u5e94\u5f0f\u5e03\u5c40\u7684\u65b9\u5f0f\u6709\u5982\u4e0b\uff1a<\/p>\n<\/blockquote>\n\n\n\n<pre class=\"wp-block-code\"><code>\u5a92\u4f53\u67e5\u8be2\uff08\u6211\u4eec\u53ef\u4ee5\u8bbe\u7f6e\u4e0d\u540c\u7c7b\u578b\u7684\u5a92\u4f53\u6761\u4ef6\uff0c\u5e76\u6839\u636e\u5bf9\u5e94\u7684\u6761\u4ef6\uff0c\u7ed9\u76f8\u5e94\u7b26\u5408\u6761\u4ef6\u7684\u5a92\u4f53\u8c03\u7528\u76f8\u5bf9\u5e94\u7684\u6837\u5f0f\u8868\uff09\n\u767e\u5206\u6bd4\nvw\/vh\nrem<\/code><\/pre>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">\u54cd\u5e94\u5f0f\u8bbe\u8ba1\u5b9e\u73b0\u901a\u5e38\u4f1a\u4ece\u4ee5\u4e0b\u51e0\u65b9\u9762\u601d\u8003\uff1a<\/p>\n<\/blockquote>\n\n\n\n<pre class=\"wp-block-code\"><code>\u5f39\u6027\u76d2\u5b50\uff08\u5305\u62ec\u56fe\u7247\u3001\u8868\u683c\u3001\u89c6\u9891\uff09\u548c\u5a92\u4f53\u67e5\u8be2\u7b49\u6280\u672f\n\u4f7f\u7528\u767e\u5206\u6bd4\u5e03\u5c40\u521b\u5efa\u6d41\u5f0f\u5e03\u5c40\u7684\u5f39\u6027UI\uff0c\u540c\u65f6\u4f7f\u7528\u5a92\u4f53\u67e5\u8be2\u9650\u5236\u5143\u7d20\u7684\u5c3a\u5bf8\u548c\u5185\u5bb9\u53d8\u66f4\u8303\u56f4\n\u4f7f\u7528\u76f8\u5bf9\u5355\u4f4d\u4f7f\u5f97\u5185\u5bb9\u81ea\u9002\u5e94\u8c03\u8282\n\u9009\u62e9\u65ad\u70b9\uff0c\u9488\u5bf9\u4e0d\u540c\u65ad\u70b9\u5b9e\u73b0\u4e0d\u540c\u5e03\u5c40\u548c\u5185\u5bb9\u5c55\u793a<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">10.css\u9009\u62e9\u5668\u6709\u54ea\u4e9b\uff1f\u4f18\u5148\u7ea7\uff1f<\/h3>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">\u5173\u4e8ecss\u5c5e\u6027\u9009\u62e9\u5668\u5e38\u7528\u7684\u6709\uff1a<\/p>\n<\/blockquote>\n\n\n\n<pre class=\"wp-block-code\"><code>id\u9009\u62e9\u5668\uff08#box\uff09\uff0c\u9009\u62e9id\u4e3abox\u7684\u5143\u7d20\n\u7c7b\u9009\u62e9\u5668\uff08.one\uff09\uff0c\u9009\u62e9\u7c7b\u540d\u4e3aone\u7684\u6240\u6709\u5143\u7d20\n\u6807\u7b7e\u9009\u62e9\u5668\uff08div\uff09\uff0c\u9009\u62e9\u6807\u7b7e\u4e3adiv\u7684\u6240\u6709\u5143\u7d20\n\u540e\u4ee3\u9009\u62e9\u5668\uff08#box div\uff09\uff0c\u9009\u62e9id\u4e3abox\u5143\u7d20\u5185\u90e8\u6240\u6709\u7684div\u5143\u7d20\n\u5b50\u9009\u62e9\u5668\uff08.one&gt;one_1\uff09\uff0c\u9009\u62e9\u7236\u5143\u7d20\u4e3a.one\u7684\u6240\u6709.one_1\u7684\u5143\u7d20\n\u76f8\u90bb\u540c\u80de\u9009\u62e9\u5668\uff08.one+.two\uff09\uff0c\u9009\u62e9\u7d27\u63a5\u5728.one\u4e4b\u540e\u7684\u6240\u6709.two\u5143\u7d20\n\u7fa4\u7ec4\u9009\u62e9\u5668\uff08div,p\uff09\uff0c\u9009\u62e9div\u3001p\u7684\u6240\u6709\u5143\u7d20<\/code><\/pre>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">\u4f2a\u7c7b\u9009\u62e9\u5668<\/p>\n<\/blockquote>\n\n\n\n<pre class=\"wp-block-code\"><code>:link \uff1a\u9009\u62e9\u672a\u88ab\u8bbf\u95ee\u7684\u94fe\u63a5\n:visited\uff1a\u9009\u53d6\u5df2\u88ab\u8bbf\u95ee\u7684\u94fe\u63a5\n:active\uff1a\u9009\u62e9\u6d3b\u52a8\u94fe\u63a5\n:hover \uff1a\u9f20\u6807\u6307\u9488\u6d6e\u52a8\u5728\u4e0a\u9762\u7684\u5143\u7d20\n:focus \uff1a\u9009\u62e9\u5177\u6709\u7126\u70b9\u7684\n:first-child\uff1a\u7236\u5143\u7d20\u7684\u9996\u4e2a\u5b50\u5143\u7d20<\/code><\/pre>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">\u4f2a\u5143\u7d20\u9009\u62e9\u5668<\/p>\n<\/blockquote>\n\n\n\n<pre class=\"wp-block-code\"><code>:first-letter \uff1a\u7528\u4e8e\u9009\u53d6\u6307\u5b9a\u9009\u62e9\u5668\u7684\u9996\u5b57\u6bcd\n:first-line \uff1a\u9009\u53d6\u6307\u5b9a\u9009\u62e9\u5668\u7684\u9996\u884c\n:before : \u9009\u62e9\u5668\u5728\u88ab\u9009\u5143\u7d20\u7684\u5185\u5bb9\u524d\u9762\u63d2\u5165\u5185\u5bb9\n:after : \u9009\u62e9\u5668\u5728\u88ab\u9009\u5143\u7d20\u7684\u5185\u5bb9\u540e\u9762\u63d2\u5165\u5185\u5bb9<\/code><\/pre>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">\u5c5e\u6027\u9009\u62e9\u5668<\/p>\n<\/blockquote>\n\n\n\n<pre class=\"wp-block-code\"><code>&#91;attribute] \u9009\u62e9\u5e26\u6709attribute\u5c5e\u6027\u7684\u5143\u7d20\n&#91;attribute=value] \u9009\u62e9\u6240\u6709\u4f7f\u7528attribute=value\u7684\u5143\u7d20\n&#91;attribute~=value] \u9009\u62e9attribute\u5c5e\u6027\u5305\u542bvalue\u7684\u5143\u7d20\n&#91;attribute|=value]\uff1a\u9009\u62e9attribute\u5c5e\u6027\u4ee5value\u5f00\u5934\u7684\u5143\u7d20<\/code><\/pre>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">\u5728CSS3\u4e2d\u65b0\u589e\u7684\u9009\u62e9\u5668\u6709\u5982\u4e0b\uff1a<\/p>\n<\/blockquote>\n\n\n\n<pre class=\"wp-block-code\"><code>:first-of-type \u7236\u5143\u7d20\u7684\u9996\u4e2a\u5143\u7d20\n:last-of-type \u7236\u5143\u7d20\u7684\u6700\u540e\u4e00\u4e2a\u5143\u7d20\n:only-of-type \u7236\u5143\u7d20\u7684\u7279\u5b9a\u7c7b\u578b\u7684\u552f\u4e00\u5b50\u5143\u7d20\n:only-child \u7236\u5143\u7d20\u4e2d\u552f\u4e00\u5b50\u5143\u7d20\n:nth-child(n) \u9009\u62e9\u7236\u5143\u7d20\u4e2d\u7b2cN\u4e2a\u5b50\u5143\u7d20\n:nth-last-of-type(n) \u9009\u62e9\u7236\u5143\u7d20\u4e2d\u7b2cN\u4e2a\u5b50\u5143\u7d20\uff0c\u4ece\u540e\u5f80\u524d\n:last-child \u7236\u5143\u7d20\u7684\u6700\u540e\u4e00\u4e2a\u5143\u7d20\n:root \u8bbe\u7f6eHTML\u6587\u6863\n:empty \u6307\u5b9a\u7a7a\u7684\u5143\u7d20\n:enabled \u9009\u62e9\u88ab\u7981\u7528\u5143\u7d20\n:disabled \u9009\u62e9\u88ab\u7981\u7528\u5143\u7d20\n:checked \u9009\u62e9\u9009\u4e2d\u7684\u5143\u7d20\n:not(selector) \u9009\u62e9\u975e &lt;selector&gt; \u5143\u7d20\u7684\u6240\u6709\u5143\u7d20\n------------------------------------------------------------------\n&#91;attribute*=value]\uff1a\u9009\u62e9attribute\u5c5e\u6027\u503c\u5305\u542bvalue\u7684\u6240\u6709\u5143\u7d20\n&#91;attribute^=value]\uff1a\u9009\u62e9attribute\u5c5e\u6027\u5f00\u5934\u4e3avalue\u7684\u6240\u6709\u5143\u7d20\n&#91;attribute$=value]\uff1a\u9009\u62e9attribute\u5c5e\u6027\u7ed3\u5c3e\u4e3avalue\u7684\u6240\u6709\u5143\u7d20<\/code><\/pre>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">\u4f18\u5148\u7ea7<\/p>\n<\/blockquote>\n\n\n\n<pre class=\"wp-block-code\"><code>\u5185\u8054 &gt; ID\u9009\u62e9\u5668 &gt; \u7c7b\u9009\u62e9\u5668 &gt; \u6807\u7b7e\u9009\u62e9\u5668<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">11.\u6e05\u9664\u6d6e\u52a8\u7684\u65b9\u6cd5<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u65b9\u6cd5\u4e00\uff1a\u4f7f\u7528\u5e26 clear \u5c5e\u6027\u7684\u7a7a\u5143\u7d20<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u6d6e\u52a8\u5143\u7d20\u540e\u4f7f\u7528\u4e00\u4e2a\u7a7a\u5143\u7d20,\u5e76\u5728 CSS \u4e2d\u8d4b \u4e88.clear{clear:both;}\u5c5e\u6027\u5373\u53ef\u6e05\u7406\u6d6e\u52a8\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\" start=\"2\">\n<li>\u65b9\u6cd5\u4e8c\uff1a\u4f7f\u7528 CSS \u7684 overflow \u5c5e\u6027<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">\u7ed9\u6d6e\u52a8\u5143\u7d20\u7684\u5bb9\u5668\u6dfb\u52a0 overflow:hidden;\u6216 overflow:auto;\u53ef\u4ee5\u6e05\u9664\u6d6e\u52a8\uff0c\u53e6\u5916\u5728 IE6 \u4e2d\u8fd8 \u9700\u8981\u89e6\u53d1 hasLayout \uff0c\u4f8b\u5982\u4e3a\u7236\u5143\u7d20\u8bbe\u7f6e\u5bb9\u5668\u5bbd\u9ad8\u6216\u8bbe\u7f6e zoom:1\u3002 \u5728\u6dfb\u52a0 overflow \u5c5e\u6027\u540e\uff0c\u6d6e\u52a8\u5143\u7d20\u53c8\u56de\u5230\u4e86\u5bb9\u5668\u5c42\uff0c\u628a\u5bb9\u5668\u9ad8\u5ea6\u6491\u8d77\uff0c\u8fbe\u5230\u4e86\u6e05\u7406\u6d6e\u52a8 \u7684\u6548\u679c\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\" start=\"3\">\n<li>\u65b9\u6cd5\u4e09\uff1a\u7ed9\u6d6e\u52a8\u7684\u5143\u7d20\u7684\u5bb9\u5668\u6dfb\u52a0\u6d6e\u52a8<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">\u7ed9\u6d6e\u52a8\u5143\u7d20\u7684\u5bb9\u5668\u4e5f\u6dfb\u52a0\u4e0a\u6d6e\u52a8\u5c5e\u6027\u5373\u53ef\u6e05\u9664\u5185\u90e8\u6d6e\u52a8\uff0c\u4f46\u662f\u8fd9\u6837\u4f1a\u4f7f\u5176\u6574\u4f53\u6d6e\u52a8\uff0c\u5f71 \u54cd\u5e03\u5c40\uff0c\u4e0d\u63a8\u8350\u4f7f\u7528\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\" start=\"4\">\n<li>\u65b9\u6cd5\u56db\uff1a\u4f7f\u7528 CSS \u7684:after \u4f2a\u5143\u7d20<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">\u7ed3\u5408:after \u4f2a\u5143\u7d20\uff08\u6ce8\u610f\u8fd9\u4e0d\u662f\u4f2a\u7c7b\uff0c\u800c\u662f\u4f2a\u5143\u7d20\uff0c\u4ee3\u8868\u4e00\u4e2a\u5143\u7d20\u4e4b\u540e\u6700\u8fd1\u7684\u5143\u7d20\uff09\u548c IEhack \uff0c\u53ef\u4ee5\u5b8c\u7f8e\u517c\u5bb9\u5f53\u524d\u4e3b\u6d41\u7684\u5404\u5927\u6d4f\u89c8\u5668\uff0c\u8fd9\u91cc\u7684 IEhack \u6307\u7684\u662f\u89e6\u53d1 hasLayout\u3002 \u7ed9\u6d6e\u52a8\u5143\u7d20\u7684\u5bb9\u5668\u6dfb\u52a0\u4e00\u4e2a clearfix \u7684 class\uff0c\u7136\u540e\u7ed9\u8fd9\u4e2a class \u6dfb\u52a0\u4e00\u4e2a:after \u4f2a\u5143\u7d20\u5b9e \u73b0\u5143\u7d20\u672b\u5c3e\u6dfb\u52a0\u4e00\u4e2a\u770b\u4e0d\u89c1\u7684\u5757\u5143\u7d20\u6e05\u9664\u6d6e\u52a8<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">12. \u8c08\u8c08\u505a\u597dseo\u9700\u8981\u8003\u8651\u4ec0\u4e48?<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u8bed\u4e49\u5316html\u6807\u7b7e<\/li>\n\n\n\n<li>\u5408\u7406\u7684title, description, keywords;<\/li>\n\n\n\n<li>\u91cd\u8981\u7684html\u4ee3\u7801\u653e\u524d\u9762<\/li>\n\n\n\n<li>\u5c11\u7528iframe, 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