网站布局：
实例
<!DOCTYPE html>
<html lang="zh">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>网站首页布局</title>
<style type="text/css">
*{margin: 0; padding: 0;}
li{list-style: none;}
a{ text-decoration: none;}
.header{ width: 90%; height: 70px; background: #000; margin: 0 auto;}
.header .menu li{ width: 150px; text-align: center; float: left; }
.header .menu li.active{background: lightseagreen;}
.header .menu li a{ color: #fff; display: inline-block; width: 150px; height: 70px; line-height: 70px;}
.header .menu li a:hover{background: lightseagreen; }
.content{ width:90%; margin: 10px auto; overflow: hidden; border: 1px solid #ccc;}
.content .center,.content .left,.content .right{ min-height: 800px; float: left;}
.content .center{ box-sizing: border-box; width: 100%; background: #90EE90; padding-left: 250px; padding-right: 200px;}
.content .left{ width: 250px; background: red; margin-left: -100%;}
.content .right{ width:200px; background: blue; margin-left: -200px;}
.content .left h2{ text-align: center; border-bottom: 1px dashed #ccc; line-height: 80px;}
.content .left .procate li{ margin: 15px auto; padding-left: 15px; }
.content .left .procate li a{color: #fff;}
.content .center h3{border-bottom: 1px dashed #ccc; line-height: 80px; text-align: center;}
.content .center .prolist{ padding-top: 20px;}
.content .center .prolist li{ float: left; width: 160px; height: 200px; margin-bottom: 20px; margin-left: 5px;}
.content .center .prolist li img{ width: 100%;}
.content .center .prolist li p{ text-align: center; font-size: 1rem;}
.content .right h3{border-bottom: 1px dashed #ccc; line-height: 80px; text-align: center;}
.content .right .qiang{ padding-top: 20px;}
.content .right .qiang li{ margin-bottom: 15px;}
.content .right .qiang img{ width: 80%; display: block; margin: 0 auto;}
.content .right .qiang p{ text-align: center; color: #fff;}
.footer { box-sizing: border-box; width: 1200px; height: 60px; line-height: 60px; background: #999999; width: 90%; margin: 0 auto;text-align: center;}
.footer a{ display:inline-block; text-align: center; color:#ccc; padding: 0px 10px; }
</style>
</head>
<body>
<div class="header">
<ul class="menu">
<li class="active"><a href="">网站首页</a></li>
<li><a href="">关于我们</a></li>
<li><a href="">产品展示</a></li>
<li><a href="">新闻动态</a></li>
<li><a href="">在线留言</a></li>
<li><a href="">营销网络</a></li>
<li><a href="">售后服务</a></li>
<li><a href="">联系我们</a></li>
</ul>
</div>
<div class="content">
<div class="center">
<h3>推荐产品</h3>
<ul class="prolist">
<li><a href=""><img src="https://img12.360buyimg.com/n1/jfs/t1/72827/24/1320/318858/5cf7d494Ec543f873/1146ef79095cb4bc.jpg"><p>东北大米好大米</p><p>价格：88元</p></a></li>
<li><a href=""><img src="https://img12.360buyimg.com/n1/jfs/t1/72827/24/1320/318858/5cf7d494Ec543f873/1146ef79095cb4bc.jpg"><p>东北大米好大米</p><p>价格：88元</p></a></li>
<li><a href=""><img src="https://img12.360buyimg.com/n1/jfs/t1/72827/24/1320/318858/5cf7d494Ec543f873/1146ef79095cb4bc.jpg"><p>东北大米好大米</p><p>价格：88元</p></a></li>
<li><a href=""><img src="https://img12.360buyimg.com/n1/jfs/t1/72827/24/1320/318858/5cf7d494Ec543f873/1146ef79095cb4bc.jpg"><p>东北大米好大米</p><p>价格：88元</p></a></li>
<li><a href=""><img src="https://img12.360buyimg.com/n1/jfs/t1/72827/24/1320/318858/5cf7d494Ec543f873/1146ef79095cb4bc.jpg"><p>东北大米好大米</p><p>价格：88元</p></a></li>
<li><a href=""><img src="https://img12.360buyimg.com/n1/jfs/t1/72827/24/1320/318858/5cf7d494Ec543f873/1146ef79095cb4bc.jpg"><p>东北大米好大米</p><p>价格：88元</p></a></li>
<li><a href=""><img src="https://img12.360buyimg.com/n1/jfs/t1/72827/24/1320/318858/5cf7d494Ec543f873/1146ef79095cb4bc.jpg"><p>东北大米好大米</p><p>价格：88元</p></a></li>
<li><a href=""><img src="https://img12.360buyimg.com/n1/jfs/t1/72827/24/1320/318858/5cf7d494Ec543f873/1146ef79095cb4bc.jpg"><p>东北大米好大米</p><p>价格：88元</p></a></li>
<li><a href=""><img src="https://img12.360buyimg.com/n1/jfs/t1/72827/24/1320/318858/5cf7d494Ec543f873/1146ef79095cb4bc.jpg"><p>东北大米好大米</p><p>价格：88元</p></a></li>
<li><a href=""><img src="https://img12.360buyimg.com/n1/jfs/t1/72827/24/1320/318858/5cf7d494Ec543f873/1146ef79095cb4bc.jpg"><p>东北大米好大米</p><p>价格：88元</p></a></li>
<li><a href=""><img src="https://img12.360buyimg.com/n1/jfs/t1/72827/24/1320/318858/5cf7d494Ec543f873/1146ef79095cb4bc.jpg"><p>东北大米好大米</p><p>价格：88元</p></a></li>
<li><a href=""><img src="https://img12.360buyimg.com/n1/jfs/t1/72827/24/1320/318858/5cf7d494Ec543f873/1146ef79095cb4bc.jpg"><p>东北大米好大米</p><p>价格：88元</p></a></li>
<li><a href=""><img src="https://img12.360buyimg.com/n1/jfs/t1/72827/24/1320/318858/5cf7d494Ec543f873/1146ef79095cb4bc.jpg"><p>东北大米好大米</p><p>价格：88元</p></a></li>
<li><a href=""><img src="https://img12.360buyimg.com/n1/jfs/t1/72827/24/1320/318858/5cf7d494Ec543f873/1146ef79095cb4bc.jpg"><p>东北大米好大米</p><p>价格：88元</p></a></li>
</ul>
</div>
<div class="left">
<h2>产品分类</h2>
<ul class="procate">
<li><a href="">产品分类1</a></li>
<li><a href="">产品分类2</a></li>
<li><a href="">产品分类3</a></li>
<li><a href="">产品分类4</a></li>
<li><a href="">产品分类5</a></li>
<li><a href="">产品分类6</a></li>
<li><a href="">产品分类7</a></li>
<li><a href="">产品分类8</a></li>
<li><a href="">产品分类9</a></li>
<li><a href="">产品分类10</a></li>
</ul>
</div>
<div class="right">
<h3>抢好货</h3>
<ul class="qiang">
<li><img src="static/images/girl.jpg" alt=""><p>大美女</p></li>
<li><img src="static/images/girl.jpg" alt=""><p>大美女</p></li>
<li><img src="static/images/girl.jpg" alt=""><p>大美女</p></li>
</ul>
</div>
</div>
<div class="footer">
<a href="">电话：010-888888</a>
<a href="">地址：人民广场东200米</a>
<a href="">邮箱：liuliu@qq.com</a>
</div>
</body>
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