<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" c />
<title>无标题文档</title>
<style type="text/css">
#nav_link li {
float: left;
height: 40px;
padding-right: 14px;
padding-left: 14px;
background-color: #009999;
border: 1px solid #CCCC99;
}
#nav_link li.li_nobg {
background-color: #FF0000;
display: block;
}</style>
<body>
<div id="nav_link">
<ul>
<li></li>
<li class="li_nobg"><a href="#">index</a></li>
<li><a href="#">intro</a></li>
<li><a href="#">news</a></li>
</ul>
</div>
</body>
</html>

顺便提一句,你给的代码里少了个</style>收尾
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本帖最后由 Sam_appleseed 于 2007-10-19 12:41 编辑 ]