<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html >
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>IE6 CHROME测试通过 其他么条件未测试</title>
<style type="text/css">
<!--
html,body{height:100%; margin:0px;}
#mainbody{width:100%; height:100%;background-color:#33CCCC;}
#top{
width:100%; height:100px; background-color:#666; position:relative; z-index:5;
}
#content{
height:auto;
top:100px;
bottom:30px;
width:100%;
}
#buttom{
position:absolute;
width:100%;
height:30px;
background-color:#f06;
bottom:0;
}
-->
</style>
</head>
<body>
<div id="mainbody">
<div id="top"> top </div>
<div id="content"> content </div>
<div id="buttom"> foot </div>
</div>
</body> </html>
来源：https://www.cnblogs.com/chenjh/archive/2010/11/25/1887365.html