<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
<style>
.list{
margin: 0;
padding: 0;
list-style: none;
width: 300px;
}
.list li{
height: 30px;
border: 1px solid red;
line-height: 30px;
*vertical-align: top;
}
.list li a{
float: left;
}
.list li span{
float: right;
}
</style>
<!--
解决方案：
针对ie6，7添加vertical-align: top; *vertical-align: top;
-->
</head>
<body>
<ul class="list">
<li>
<a href="">左边</a>
<span>右边</span>
</li>
<li>
<a href="">左边</a>
<span>右边</span>
</li>
<li>
<a href="">左边</a>
<span>右边</span>
</li>
<li>
<a href="">左边</a>
<span>右边</span>
</li>
</ul>
</body>
</html>