网页上中下三分布局即上下固定中间自适应
脚本之家
<!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>
<!-- 禁止浏览器从本地缓存中调阅页面。-->
<meta http-equiv="pragram" content="no-cache">
<!--网页不保存在缓存中，每次访问都刷新页面。-->
<meta http-equiv="cache-control" content="no-cache, must-revalidate">
<!--同上面意思差不多，必须重新加载页面-->
<!--网页在缓存中的过期时间为0，一旦网页过期，必须从服务器上重新订阅-->
<meta http-equiv="expires" content="0">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title></title>
<style type="text/css">
* {
margin:0;
padding:0;
}
html,
body,
#box {
height:100%;
font:small/1.5 "宋体", serif;
}
body {
text-align:center;
}
#box {
text-align:left;
background:#666;
display:table;
width:80%;
margin:0 auto;
position:relative;
}
#box > div {
display:table-row;
}
#header,
#footer {
background:#fcc;
height:50px;
vertical-align:bottom;
}
#main {
background:#ccf;
}
#main #wrap {
display:table-cell;
background:#ffc;
vertical-align:middle;
}
#text {
text-align:center;
}
</style>
<!--[if IE]>
<style type="text/css">
#header,
#footer {
width:100%;
z-index:3;
position:absolute;
}
#footer {
bottom:0;
}
#main {
height:100%;
z-index:1;
position:relative;
}
#main #wrap {
position:absolute;
top:50%;
width:100%;
text-align:left;
}
#main #text {
position:relative;
width:100%;
top:-50%;
background:#ccc;
}
</style>
<![endif]-->
</head>
<body>
<div id="box">
<div id="header">header</div>
<div id="main">
<div id="wrap">
<div id="text">
<p>测试文本</p>
</div>
</div>
</div>
<div id="footer">footer</div>
</div>
</body>
</html>