abstract：<!DOCTYPE html><html lang="en"><head><meta charset="UTF-8"><title>淘宝布局</title><html lang="en"><head><meta charset="
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>淘宝布局</title>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>淘宝布局</title>
<link rel="stylesheet" href="staic/css/font-awesome-4.7.0/font-awesome-4.7.0/css/font-awesome.min.css">
<style>
* {
margin: 0;
padding: 0;
}
a {
text-decoration: none;
color: #3C3C3C;
font-size: 12px;
}
li{
list-style: none;
}
.clear {
clear: both;
}
.header {
width: 100%;
background-color: #f5f5f5;
}
.header_content {
width: 1197px;
margin: 0 auto;
line-height: 35px;
}
.header_left {
height: 35px;
float: left;
}
.header_right {
height: 35px;
float: right;
}
.header_a {
display: inline-block;
width: 90px;
height: 35px;
text-align: center;
}
.header_a {
display: inline-block;
width: 90px;
height: 35px;
text-align: center;
}
.header_a:hover {
display: inline-block;
width: 90px;
height: 35px;
text-align: center;
background-color: #fff;
position: relative;
}
.header a {
margin-right: 5px;
}
.header a:hover {
color: #f22e00 !important;
}
.header_a ul{
border: 1px solid #f5f5f5;
display: none;
position: absolute;
width: 100px;
border-top:none;
}
.header_a:hover ul{
display: block;
}
.header_a ul li{
color: #6c6c6c;
height: 30px;
line-height: 30px;
text-align: left;
padding: 0 3px;
}
.header_a ul li:hover{
background-color: #f5f5f5;
}
</style>
</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: #f22e00">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>足迹</li>
</ul>
</a>
<a href="" class="header_a"><i class="fa fa-shopping-cart"></i> 购物车 <i class="fa fa-angle-down"></i></a>
<a href=""><i class="fa fa-star"></i> 收藏夹</a>
<a href="">商品分类</a>
<a href="" class="header_a">卖家中心 <i class="fa fa-angle-down"></i>
<ul>
<li>免费开店</li>
<li>已卖出的宝贝</li>
<li>已买到的宝贝</li>
</ul>
</a>
<a href="" class="header_a">联系客服 <i class="fa fa-angle-down"></i>
<ul>
<li>消费者客服</li>
<li>卖家客服</li>
</ul>
</a>
<a href="">网站导航</a>
</div>
</div>
<div class="clear"></div>
</div>
</body>
</html>
总结：实现下拉的原理即改变下拉部分的display属性，另在下拉ul的父级元素设置一个相对定位，在给ul一个绝对定位可以让ul排版正确而不会挤掉后面的元素
Correcting teacher：韦小宝Correction time：2019-01-31 09:15:07
Teacher's summary：写的很不错 css实现下拉效果还是比较简单的 课后记得要多练习哦 继续加油吧