利用浮动做横向导航条
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>CSS中的浮动</title>
<style type="text/css">
ul li{
list-style: none;
width: 100px;
height: 48px;
line-height: 40px;
text-align: center;
background: #ccc;
margin: 1px;
float: left;
}
.l{
width: 300px;
height: 300px;
background: red;
float: right;
}
.clear{clear: both;}
</style>
</head>
<body>
<ul>
<li>html</li>
<li>css3</li>
<li>php</li>
<li>javascript</li>
<li>jquery</li>
</ul>
</body>
</html>