摘要：<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>仿懒人图库导航</title> <link rel="stylesheet" href="style.css&q
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>仿懒人图库导航</title>
<link rel="stylesheet" href="style.css">
<style>
*{margin: 0px;padding: 0px;}
li{list-style: none;}
a{text-decoration: none;color: #fff;}
.nav{width: 1200px;height: 36px;background-color: #333333;margin: 30px auto 0px; line-height: 36px;}
.nav li{float: left;margin-left: 30px; position: relative;font-size: 14px;}
.nav li a{display: inline-block;border: 1px solid #333333;height: 34px;padding: 0px 6px;}
.nav li a:hover{color: #2d8930;border: 1px solid #2d8930;height: 34px;background-color: #fff;}
.nav_b{display: none;}
/*.nav_a{position: relative;}*/
.nav_a:hover .nav_b{display: block; position: absolute;top: 36px;}
.nav_b {width: 268px;border: 1px solid #2d8930;border-top: none;}
.nav_b li{float: left;margin-left: 10px;}
.nav_b li a{display: inline-block;border:none;height: 34px;padding: 0px 10px;color: #333;font-size: 12px;}
.nav_b li a:hover{color: #2d8930;border:none;height: 34px;text-decoration:underline;font-size: 12px;}
</style>
</head>
<body>
<div>
<ul>
<li><a href="/">首页</a></li>
<li><a href="aaa">矢量素材</a>
<ul>
<li><a href="/vector/classics/">矢量花纹</a></li>
<li><a href="/vector/classics/">经典实用</a></li>
<li><a href="/vector/festival/">矢量节日</a></li>
<li><a href="/vector/design/">广告设计</a></li>
<li><a href="/vector/chinese_style/">矢量中国</a></li>
<li><a href="/vector/icon/">矢量图标</a></li>
<li><a href="/vector/trend/">矢量潮流</a></li>
<li><a href="/vector/logo/">矢量标志</a></li>
<li><a href="/vector/life/">生活百科</a></li>
<li><a href="/vector/cartoon/">矢量卡通</a></li>
<li><a href="/vector/people/">矢量人物</a></li>
<li><a href="/vector/transport/">交通运输</a></li>
<li><a href="/vector/animal/">矢量动物</a></li>
<li><a href="/vector/plant/">矢量植物</a></li>
<li><a href="/vector/landscape/">风景建筑</a></li>
<li><a href="/vector/food_fruit/">食品果蔬</a></li>
<li><a href="/vector/font/">矢量字体</a></li>
<li><a href="/vector/background/">矢量背景</a></li>
<li><a href="/vector/sport/">体育运动</a></li>
<li><a href="/vector/other/">其他矢量</a></li>
</ul>
</li>
<li><a href="#">PNG图标</a></li>
<li><a href="#">JS代码</a></li>
<li><a href="#">PSD素材</a></li>
<li><a href="#">图片素材</a></li>
<li><a href="#">网页素材</a></li>
<li><a href="#">用户体验</a></li>
<li><a href="#">设计分享</a></li>
</ul>
</div>
</body>
</html>
批改老师：天蓬老师批改时间：2019-01-19 09:08:30
老师总结：下拉菜单 的重点在于绝对定位的使用, 判断一个页面是否使用了绝对定位, 手工拉抻一下浏览器就可以看出来
