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<html lang="zh"><head> <meta charset="utf-8"/> <title>HTML规范 整体结构</title> <meta name="keywords" content=""/> <meta name="description" content=""/> <meta name="viewport" content="width=device-width"/> <meta http-equiv="X-UA-Compatible" content="IE=Edge" /> <!--[if lt IE 7]> <html class="no-js lt-ie9 lt-ie8 lt-ie7" lang="zh"> <![endif]--> <!--[if IE 7]> <html class="no-js lt-ie9 lt-ie8" lang="zh"> <![endif]--> <!--[if IE 8]> <html class="no-js lt-ie9" lang="zh"> <![endif]--> <!--[if gt IE 8]> <html class="no-js" lang="zh"> <![endif]--></head><body></body>
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- 必须将css文件引入并置于head中
- 必须将js文件引入并置于body底部