将Div填充整个网页
要想让div填满整个浏览器，至少要让<html>和<body>这两个标签的宽，高为浏览器的100%
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1" />
<title>CSS 100% Height</title>
<style type="text/css">
html {
min-height: 100%;
height:100%;
}
body {
margin: 0;
padding: 0;
min-height: 100%;
height:100%;
}
#content {
background: #EEE;
border-left: 1px solid #000;
border-right: 1px solid #000;
padding: 0 20px 0 20px;
margin: auto;
font: 1.5em arial, verdana, sans-serif;
width: 960px;
min-height: 100%;
height:100%;
}
</style>
</head>
<body>
<div id="content">
HIHIHIHIHI
</div>
</body>
</html>
