hover一个div展示另一个div
效果图：
hover前：
hover后：
效果：
代码：
<!DOCTYPE html>
<html lang="zh-cn">
<head>
<meta charset="utf-8" />
<title>CSS Test Page</title>
<style type="text/css">
* {
margin: 0;
padding: 0;
}
.cent {
margin: 50px;
background: #0CF;
height: 100px;
width: 100px;
}
.cs {
margin: 100px;
text-align: center;
width: 100px;
height: 100px;
background: #F09;
top: 0px;
position: absolute;
opacity: 0;
display: block;
font-size: 13px;
transition: 0.3s;
-webkit-transition: .5s;
-moz-transition: .5s;
}
.cent:hover .cs {
color: #656e73;
opacity: 1;
}
</style>
</head>
<body>
<div class="cent">
This is the parent div
<div class="cs">
<p>this is a child div</p>
</div>
</div>
</body>
</html>
