标签：des style http color width io
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<title> new document </title>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<meta name="keywords" content="" />
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<style type="text/css">
a span { display:inline-block; border:0 solid #fff; border-width:5px 5px 0; border-color:#090 #fff;width:0; overflow:hidden;height:0; }
a:hover{ border:none;}
a:hover span { border-width:0 5px 6px; }
</style>
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<p>
<a href="">悬浮-下拉菜单<span></span></a>
</p>
</body>
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标签：des style http color width io
原文地址：http://my.oschina.net/glelaine/blog/288312
