abstract：<!DOCTYPE html> <html> <head> <title> css下拉效果</title> <style type="text/css"> *{margin: 0px;padding: 0px;} li{list-style:
<!DOCTYPE html>
<html>
<head>
<title> css下拉效果</title>
<style type="text/css">
*{margin: 0px;padding: 0px;}
li{list-style: none;}
a{text-decoration: none;color: #ccc;cursor: pointer;}
.clear{clear: both;}
.contentMenu{/*background: #ccc;*/width: 100%;height: 70px;margin: 10px 200px;}
.contentMenu-bottom_li_1{width: 240px;height: 70px;float: left;}
.contentMenu-bottom_li_1 .logoBottom{display:block;float: left;margin:5px 0px; }
.contentMenu-bottom_li_1 .logo{display: block;float: left;margin-left: 15px;width: 163px;height: 70px;}
.contentMenu_ul{float: left;width: 540px;height: 70px;line-height: 70px;}
.contentMenu_ul li{float: left;margin-right: 10px;}
.contentMenu_form{float: right;width: 310px;height: 70px;position: relative;}
.contentMenu_form input[type="text"]{width: 230px;height: 50px;float: left;}
.botton{border: 1px solid #ccc;width: 60px;height: 52px;float: left;text-align: center;}
.contentMenu_form_a{width: 110px; position: absolute;top: 15px;right: 75px;}
.contentMenu_form_a a{color: #aaa;width: 50px;font-size: 12px;background: #ebebeb;padding: 3px;}
.botton i{font-size: 20px;color: #424242;line-height: 50px;}
.contentMenu_form_a a:hover{background: #ff6700;color: #fff;}
.botton:hover{background: #ff6700;width: 62px;height: 54px;border: none;}
.botton:hover i{color: #fff;}
/*下拉框*/
.MI_phone{width: 100%;height: 230px;background: #fff;border-top: 1px solid #ccc;border-bottom: 1px solid #ccc;position: absolute;left: 0px;top: 130px;display: none;}
.MI_phoneDiv{width: 1200px;height: 230px;margin:0px auto;background: #ccc;position: relative;z-index: 1000;}
.MI_phone_1{width: 160px;height: 230px;text-align: center; float: left;}
.MI_phone_1 a{font-size: 12px;color: #ccc;}
.MI_phone_1_shop{width: 120px;height: 160px;line-height: 30px;margin-top: 30px;}
.new{width: 60px;height: 18px;font-size: 12px;border: 1px solid #ff6700;color: #ff6700;line-height: 18px;text-align: center;position: absolute;top: 0px;left: 29px;}
.MI_phoneDiv span{width: 0px;border-right: 1px solid red;float: left;height: 80px;margin-top: 30px;margin-right: 45px;}
.contentMenu_ul li:hover .MI_phone{display: block;}
</style>
</head>
<body>
<div class="contentMenu">
<ul class="contentMenu_ul">
<li>小米手机
<div class="MI_phone">
<div class="MI_phoneDiv">
<div class="MI_phone_1">
<div class="new">新品</div>
<div class="MI_phone_1_shop">
<img src="images/phone/phone1.png"><br>
<a href="">小米25</a><br>
<a href="" style="background: #ff6700;">3299元</a><br>
</div>
</div>
<span></span>
<div class="MI_phone_1">
<div class="new">新品</div>
<div class="MI_phone_1_shop">
<img src="images/phone/phone1.png"><br>
<a href="">小米25</a><br>
<a href="" style="background: #ff6700;">3299元</a><br>
</div>
</div>
<span></span>
<div class="MI_phone_1">
<div class="new">新品</div>
<div class="MI_phone_1_shop">
<img src="images/phone/phone1.png"><br>
<a href="">小米25</a><br>
<a href="" style="background: #ff6700;">3299元</a><br>
</div>
</div>
<span></span>
<div class="MI_phone_1">
<div class="new">新品</div>
<div class="MI_phone_1_shop">
<img src="images/phone/phone1.png"><br>
<a href="">小米25</a><br>
<a href="" style="background: #ff6700;">3299元</a><br>
</div>
</div>
<span></span>
<div class="MI_phone_1">
<div class="new">新品</div>
<div class="MI_phone_1_shop">
<img src="images/phone/phone1.png"><br>
<a href="">小米25</a><br>
<a href="" style="background: #ff6700;">3299元</a><br>
</div>
</div>
</div>
</div>
</li>
<li>红米
<div class="MI_phone">
<div class="MI_phoneDiv">
<div class="MI_phone_1">
<div class="new">新品</div>
<div class="MI_phone_1_shop">
<img src="static/images/phone/phone1.png"><br>
<a href="">小米25</a><br>
<a href="" style="background: #ff6700;">3299元</a><br>
</div>
</div>
<span></span>
<div class="MI_phone_1">
<div class="new">新品</div>
<div class="MI_phone_1_shop">
<img src="static/images/phone/phone1.png"><br>
<a href="">小米25</a><br>
<a href="" style="background: #ff6700;">3299元</a><br>
</div>
</div>
<span></span>
<div class="MI_phone_1">
<div class="new">新品</div>
<div class="MI_phone_1_shop">
<img src="static/images/phone/phone1.png"><br>
<a href="">小米25</a><br>
<a href="" style="background: #ff6700;">3299元</a><br>
</div>
</div>
<span></span>
<div class="MI_phone_1">
<div class="new">新品</div>
<div class="MI_phone_1_shop">
<img src="static/images/phone/phone1.png"><br>
<a href="">小米25</a><br>
<a href="" style="background: #ff6700;">3299元</a><br>
</div>
</div>
<span></span>
<div class="MI_phone_1">
<div class="new">新品</div>
<div class="MI_phone_1_shop">
<img src="static/images/phone/phone1.png"><br>
<a href="">小米25</a><br>
<a href="" style="background: #ff6700;">3299元</a><br>
</div>
</div>
</div>
</div>
</li>
<li>电视
<div class="MI_phone">
<div class="MI_phoneDiv">
<div class="MI_phone_1">
<div class="new">新品</div>
<div class="MI_phone_1_shop">
<img src="static/images/phone/phone1.png"><br>
<a href="">小米25</a><br>
<a href="" style="background: #ff6700;">3299元</a><br>
</div>
</div>
<span></span>
<div class="MI_phone_1">
<div class="new">新品</div>
<div class="MI_phone_1_shop">
<img src="static/images/phone/phone1.png"><br>
<a href="">小米25</a><br>
<a href="" style="background: #ff6700;">3299元</a><br>
</div>
</div>
<span></span>
<div class="MI_phone_1">
<div class="new">新品</div>
<div class="MI_phone_1_shop">
<img src="static/images/phone/phone1.png"><br>
<a href="">小米25</a><br>
<a href="" style="background: #ff6700;">3299元</a><br>
</div>
</div>
<span></span>
<div class="MI_phone_1">
<div class="new">新品</div>
<div class="MI_phone_1_shop">
<img src="static/images/phone/phone1.png"><br>
<a href="">小米25</a><br>
<a href="" style="background: #ff6700;">3299元</a><br>
</div>
</div>
<span></span>
<div class="MI_phone_1">
<div class="new">新品</div>
<div class="MI_phone_1_shop">
<img src="static/images/phone/phone1.png"><br>
<a href="">小米25</a><br>
<a href="" style="background: #ff6700;">3299元</a><br>
</div>
</div>
</div>
</div>
</li>
<li>笔记本</li>
<li>盒子</li>
<li>新品</li>
<li>路由器</li>
</ul>
</div>
</body>
</html>
Correcting teacher：查无此人Correction time：2019-04-16 09:54:29
Teacher's summary：完成的不错。下拉效果现在很常用了，可以写好公用代码，以后直接使用。继续加油