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<meta name="description" content="本篇网页的概述，一段话，对网站的进一步描述"/>
<meta name="author" content="网页作者的资料">
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</head>
<body>
<div id="box">
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<ul id="con">
<li>1号</li>
<li>2号</li>
<li>3号</li>
<li>4号</li>
</ul>
</body>
</html>
原文：http://blog.csdn.net/sjtu_chenchen/article/details/45649103