<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<style type="text/css">
.box{
width: 200px;
background-color: gold;
font-size: 16px;
display: inline-block;
text-align: center; /*水平居中*/
line-height: 48px; /*垂直居中*/
}
.con h3{
font-size: 30px;
}
.box2{
width: 200px;
height: 200px;
background-color: gold;
font-size: 16px;
display: none;
}
.con:hover .box2{
display: block;
}
</style>
</head>
<body>
<div class="box">div元素</div>
<div class="box">div元素</div>
<br/>
<br/>
<div class="con">
<h3>文字描述</h3>
<div class="box2">文字标题的说明</div>
</div>
</ul>
</body>
</html>
