abstrakt：<!DOCTYPE html><html lang="en"><head><meta charset="UTF-8"><title>淘寶布局</title><html lang="en"><head><meta charset="
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>淘寶布局</title>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>淘寶布局</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">中國(guó)大陸 <i class="fa fa-angle-down"></i></a>
<a href="" style="color: #f22e00">親，請(qǐng)登錄</a>
<a href="">免費(fèi)注冊(cè)</a>
<a href="">手機(jī)逛淘寶</a>
</div>
<div class="header_right">
<a href="" class="header_a">我的淘寶 <i class="fa fa-angle-down"></i>
<ul>
<li>已買到的寶貝</li>
<li>足跡</li>
</ul>
</a>
<a href="" class="header_a"><i class="fa fa-shopping-cart"></i> 購(gòu)物車 <i class="fa fa-angle-down"></i></a>
<a href=""><i class="fa fa-star"></i> 收藏夾</a>
<a href="">商品分類</a>
<a href="" class="header_a">賣家中心 <i class="fa fa-angle-down"></i>
<ul>
<li>免費(fèi)開店</li>
<li>已賣出的寶貝</li>
<li>已買到的寶貝</li>
</ul>
</a>
<a href="" class="header_a">聯(lián)系客服 <i class="fa fa-angle-down"></i>
<ul>
<li>消費(fèi)者客服</li>
<li>賣家客服</li>
</ul>
</a>
<a href="">網(wǎng)站導(dǎo)航</a>
</div>
</div>
<div class="clear"></div>
</div>
</body>
</html>
總結(jié)：實(shí)現(xiàn)下拉的原理即改變下拉部分的display屬性，另在下拉ul的父級(jí)元素設(shè)置一個(gè)相對(duì)定位，在給ul一個(gè)絕對(duì)定位可以讓ul排版正確而不會(huì)擠掉后面的元素
Korrigierender Lehrer：韋小寶Korrekturzeit：2019-01-31 09:15:07
Zusammenfassung des Lehrers：寫的很不錯(cuò) css實(shí)現(xiàn)下拉效果還是比較簡(jiǎn)單的 課后記得要多練習(xí)哦 繼續(xù)加油吧