纯css模仿天猫首页
<style> *{margin:0;padding:0} li{list-style:none} a{text-decoration:none} #wrapper{font: 12px/1.5 tahoma,arial,"\5b8b\4f53";} div#top-nav{height:40px;background:#f2f2f2;border-bottom:1px solid #e1e1e1;padding:0 60px;color:#999} div#top-nav nav ul{float:right;width:65%;text-align:center} div#top-nav nav ul li {display:inline-block;list-style:none;position:relative;} div#top-nav nav ul li a{margin:0 15px;line-height:40px} div#top-nav>span{float:left;line-height:40px;} div#top-nav span>a{padding:0 10px;} div#top-nav nav ul li.sj:after{position:absolute;top:50%;left:80%;content:"";border-width:5px;border-style:solid;border-color:#888 transparent transparent transparent} div#top-nav nav ul li ul{display:none; position:absolute;top:40%;left:1%;border:1px solid;padding:10px 10px 0 5px} div#top-nav nav ul li ul li{width:11em;} div#top-nav nav ul li ul li a{display:block;} div#top-nav nav ul li:hover>ul{display:block;border-top:none} header{background:#fff;height:130px} header h1{padding:0 60px;color:red;float:left;width:20%} header >div{float:right;width:66%;} header form{border:solid red;width:50%;margin:50px 0 0 ;height:36px;position:relative} header form input:nth-child(1){width:75%;height:100%;border:0} header form input:nth-child(2){width:25%;height:100%;font-size:18px;font-weight:700;letter-spacing: 5px; background:red;position:absolute;top:0;right:0;border:0} header nav li{float:left;height:20px;} header nav ul {margin-left:-10px;width:60%} header nav ul li a{margin:0 10px 0;text-decoration:none;} header nav ul li+li{border-left:1px solid;color:#999} #main{position:relative;border:1px solid red;height:536px;width:100%} #main-nav {height:36px;border:1px solid;position:absolute;top:0;right:0;width:100%;background:red;z-index:2; } #main-nav a{line-height:36px;color:white;font-size:1.5em;margin:0 15px } #main-nav div{margin-left:200px;text-align:center;} #main section >div.item{position:absolute;height:36px;font-size:1.5em;margin-left:60px; line-height:36px;color:white;z-index:3;} #main section ul.normal-nav{background-color:rgba(238,238,238,.95);top:36px;position:relative;left:0; z-index:20;width:180px;height:500px;margin-left:60px;border:1px solid;} #main section ul li {height:31px;line-height:31px;font-size:14px;color:#111;position:relative} #main section ul li a{display:inline-block} #main section ul li:hover{background:#fff} #ba{position:absolute;z-index:-1;top:36px;left:0;width:100%;height:500px;border:1px solid #523;} #ba >img{width:100%;height:100%} footer {margin-bottom:0;border-top:1px solid #666666;background:#fff;position:relative} #ensure{height:100px;width:90%;margin:20px auto;padding:0} #ensure p{margin:10px 0;width:24%;height:100px;padding:0 0 0 5px ;margin:0;float:left;text-align:left;font-size:1.52em} #ensure p span:nth-child(1){font-size:2em;float:left;width:50px;height:50px;border:3px solid red;border-radius:25px;color:red} #extra{width:90%;border-top:1px solid #bbb;height:200px;padding-top:20px;margin:0 auto;} #extra ul{height:200px;width:20%;float:left;box-sizing:border-box;} #extra ul label{font-size:1.5em;} #extra ul li a{display:block;margin:6px 0 0 0 } #informations{color:#fff;width:100%; border-top:1px solid red;background:#000;height:200px;text-align:left;position:absolute;margin:15px 0 0 0} #informations p{margin-left:60px;padding:10px } </style> <div id="wrapper"> <div id="top-nav"> <span>喵,欢迎来天猫 <a href="#">请登录</a><a href="#">免费注册</a></span> <nav> <ul> <li class="sj"><a href="#">我的淘宝</a> <ul><li><a href="#">已买到的宝贝</a></li> <li><a href="#">已卖出的宝贝</a></li></ul> </li> <li><a href="#">我关注的品牌</a></li> <li><a href="#">购物车<span>0</span>件</a></li> <li><a href="#">收藏夹</a></li>| <li><a href="#">手机版</a></li> <li><a href="#">淘宝网</a></li> <li><a href="#">企业购</a></li> <li><a href="#">商家支持</a></li> </ul> </nav> </div> <header> <h1><a href="#">天猫</br>Tmall.com</a></h1> <div> <form> <input type="text"/> <input type="button" value="搜索"/> </form> 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