abstract：<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>导航条</title> <style type="text/css"> *{padding: 0px;margin:
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>导航条</title>
<style type="text/css">
*{padding: 0px;margin: 0px;}
.div0{font-family: 楷体;color:#DE1872;}
ul li{width: 100px;height: 40px; list-style: none;float:left; background-color: #ccc;text-align: center;line-height: 40px;margin: 0px 1px;}
ul li:hover{background-color: pink;}
.div1{background-color:#ccc;display: none;}
#xm:hover .div1{display: block;}
a{text-decoration: none;display:block;}
.div2{clear: both;}
.DIV0{width: 510px;height: 300px;margin: 0px auto;background: #DCE0E8;text-align: center;}
</style>
</head>
<body>
<div>
<div><h1>导航条</h1></div>
<ul>
<li id="xm">姓名
<div>
<a href="#">姓名1</a>
<a href="#">姓名2</a>
<a href="#">姓名3</a>
</div>
</li>
<li>学号</li>
<li>班级</li>
<li>课程</li>
<li>成绩</li>
</ul>
<div></div>
<div><h1>完成</h1></div>
</div>
</body>
</html>
Correcting teacher：天蓬老师Correction time：2019-01-10 16:42:25
Teacher's summary：a{text-decoration: none;display:block;} 以后, 必须一个样式一行, 不要再这样写成一行了