下拉菜单案例
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>html+css</title>
<link rel="stylesheet" type="text/css" href="css/css.css">
<link rel="stylesheet" type="text/css" href="css/font-awesome-4.7.0/css/font-awesome.min.css">
</head>
<body>
<div>
<div>
<div>
<a>中国大陆<i class="fa fa-angle-down"></i>
<ul>
<li>香港</li>
<li>台湾</li>
</ul>
</a>
<a>亲，请登录</a>
<a>免费注册</a>
<a>手机逛淘宝</a>
</div>
<div></div>
</div>
<div></div>
</div>
</body>
</html>
//css部分
*{margin: 0px;padding: 0px;}
.head{width: 100%;height: 40px;background: #f5f5f5}
a{text-align: none;font-size: 14px;}
.clean{clean:both;}
.content{width: 1000px; height: 40px;margin: 0 auto;}
.content_left{height: 40px;display:block; float: left;}
.content_left a {line-height: 40px; position: relative;display: inline-block;}
.content_left a:hover{color: pink;}
.content_left ul{display: none;margin-top: 0px;}
.content_left a:hover ul{display: block;position: absolute;width: 100px;}
.content_left ul li{height: 30px;}
.content_left ul li:hover{background: #f5f5f5}
li{list-style: none;}
.content_right{width:600px;height: 40px;float: right;;background: pink;}