对于这个布局方式我们可以是用绝对定位的方式来实现这个效果
<!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" content="text/html; charset=utf-8" />
<title>无标题文档</title>
<style type="text/css">
body{ margin:0px; padding:0px;}
.left{ 200px; height:500px; background:#666; position:absolute;left:0; top:0;}
.right{ 300px; height:500px; background:#009; position:absolute; right:0; top:0;}
.crent{ height:500px; background:#069; margin:0 300px 0 200px;}
</style>
</head>
<body>
<div class="left"></div>
<div class="crent"></div>
<div class="right"></div>
</body>
</html>
如果想要使得中间有空隙的话就只要改一下right 和left的值就可以了margin:0 310px 0 210px;