<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN"
"http://www.w3.org/TR/html4/strict.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" lang="en">
	<head>
		<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
		<title>上中下布局</title>
		<style type="text/css">
			body{
				background: #42413C ;
				margin: 0;/*消除body中的留白*/
				padding: 0;
				text-align: center;
			}
			
			.container{
				 778px;
				background: #FFF;
				margin: 0 auto;/*側边的自己主动值与宽度结合使用，能够将布局居中对齐*/
				text-align: left;
			}
			
			.header{
				padding: 10px 0;
				background: #ADB96E;
			}
			
			.content{
				padding: 10px 0;
			}
			
			.footer{
				padding: 0px;
				background: #CCC49F;
			}
		</style>
	</head>
	<body>
		<div class="container">
			<div class="header">
				<h1>网页头部</h1>
			</div>
			<div class="content">
				<h1>网页正文</h1>
				<h1>网页正文</h1>
				<h1>网页正文</h1>
				<h1>网页正文</h1>
				<h1>网页正文</h1>
			</div>
			<div class="footer">
				<h1>脚注</h1>
			</div>
		</div>
	</body>
</html>