<!DOCTYPE html>
<html>
<head>
<title>Demo</title>
<style>
#app{
width: 100px;
height: 35px;
background-color: #006600;
text-align: center;
line-height: 35px;
position: relative;
transform-style: preserve-3d;
transition: all 0.3s linear;
}
#app:hover{
transform: rotateX(90deg);
transition: all 0.3s linear;
-webkit-transform-origin: 50% 0;
}
#app:before{
position: absolute;
top: 100%;
left: 0;
content: attr(data-hover);
width: 100px;
height: 35px;
transform: rotateX(-90deg);
transition: all 0.3s linear;
transform-origin: 50% 0;
text-align: center;
line-height: 35px;
background-color: red;
}
</style>
<div>
<div id="app" data-hover="asdasdasd">
asdasdasd
</div>
</div>
</body>
</html>【相关推荐:CSS视频教程】
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