仿淘宝下拉导航
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>淘宝导航</title>
<style>
*{ margin:0px; padding:0px;}
a{ text-decoration:none; color:#6c6c6c; font-size:13px;}
li{list-style: none;}
.clear{ clear:both;}
.header{width:100%; background-color:#f5f5f5;}
.header_content{ width:1200px; margin:0px auto; line-height:40px;}
.header_left{height:40px;float:left;}
.header_left a{ margin-right:5px;}
.header_content a:hover { color:#FF5000;}
.header_right{ width:600px; height:40px; float:right;}
.header_a{ display:inline-block; height:40px; width:90px; text-align:center;}
.header_a:hover{ background-color:#FFF;}
.header_a ul{border: 1px solid #F5F5F5; display: none;border-top: none;}
.header_a:hover ul{display: block; position: absolute;width: 100px;}
.header_a ul li{ color: #6c6c6c; height: 30px; line-height: 30px;text-align: left;padding: 0px 3px; margin: 5px 0px;}
.header_a ul li:hover{background-color: #f5f5f5;margin: 5px 0px;}
</style>
<link rel="stylesheet" type="text/css" href="font-awesome-4.7.0/css/font-awesome.css">
</head>
<body>
<div class="header">
<div class="header_content">
<div class="header_left">
<a href="" class="header_a">中国大陆 <i class=" fa fa-angle-down"></i></a>
<a href="" style="color:#FF5000;">亲，请登录</a>
<a href="">免费注册</a>
<a href="">手机逛淘宝</a>
</div>
<div class="header_right">
<a href="" class="header_a">我的淘宝 <i class=" fa fa-angle-down"></i>
<ul>
<li>已买到的宝贝</li>
<li>我的足迹</li>
</ul>
</a>
<a href=""><span class="fa fa-cart-plus" style="color:#FF5000;"></span> 购物车</a>
<a href="" class="header_a"><span class="fa fa-star"></span> 收藏夹 <i class=" fa fa-angle-down"></i></a>
<a href="">商品分类</a>
<a href="" class="header_a">卖家中心 <i class=" fa fa-angle-down"></i></a>
<a href="" class="header_a">联系客服 <i class=" fa fa-angle-down"></i></a>
<a href="" class="header_a">网站导航 <i class=" fa fa-angle-down"></i></a>
</div>
</div>
<div class="clear"></div>
</div>
</body>
</html>经过灭绝老师这样一步一步分解，很清晰明了，但是如果是自己来弄得话，还是有难度