CSS中的浮动
<!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: 40px;line-height: 40px;text-align: center;background-color: #ccc;margin: 0px 1px;float: left;}
.box1{width: 200px;height: 200px;background-color: red;float: left;margin: 0px 1px;}
.clear{clear: both;}
</style>
</head>
<body>
<ul>
<li>html</li>
<li>css</li>
<li>JavaScript</li>
<li>jquery</li>
<li>php</li>
</ul>
<div class="clear"></div>
<div class="box1">div1</div>
<div class="box1">div2</div>
<div class="box1">div3</div>
</body>
</html>