摘要：<!DOCTYPE html><html><head> <meta charset="utf-8"> <title>淘宝导航</title> <link rel="stylesheet" type="text/css" href="css/index.
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>淘宝导航</title>
<link rel="stylesheet" type="text/css" href="css/index.css">
<link rel="stylesheet" type="text/css" href="css/font-awesome-4.7.0/css/font-awesome.min.css">
<style type="text/css">
*{margin: 0px;padding: 0px;}
a{text-decoration: none;color: #000;font-size: 13px;}
li{list-style: none;}
.clear{clear: both;}
.header{width: 100%;background-color: #f5f5f5;}
.header_contert{width: 1200px;margin: 0px auto;line-height: 40px;}
.header_left{height: 40px;float: left;}
.header_left a{margin-right: 5px;}
.header_contert a:hover{color: #ff5000;}
.header_right{height: 40px;float: right;}
.header_a{display: inline-block;height: 40px;width: 90px;text-align: center;position: relative;}
.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: #000;height: 30px;line-height: 30px;text-align: left;padding: 0px 3px;margin: 5px 0px;}
.header_a ul li:hover{background-color: #f5f5f5;}
</style>
</head>
<body>
<div class="header">
<div class="header_contert">
<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，请登陆</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></a>
<ul>
<li>已买到宝贝</li>
<li>我的足迹</li>
</ul>
<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="" class="header_a">商品分类</a>
<a href="">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" style="color:#ff5000";></i></a>
</div>
</div>
<div class="clear"></div>
</div>
</body>
</html>
我按照老师操作了，不管用，老师帮我看下什么原因
批改老师：灭绝师太批改时间：2018-11-08 16:00:16
老师总结：下拉菜单出不来吧？这个是布局问题，有二级的话，父级最好也用无序列表布局层级比较清楚，你先添加一下，如果还是不行问题提交到工单
