<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>菜鸟教程(runoob.com)</title>
<style>
div
{
width:100px;
height:0px;
position:absolute;
animation:myfirst 3s;
-webkit-animation:myfirst 3s;
myfirst是动画名称 3s是整个动画的时长
animation-fill-mode: forwards;
动画完成时，动画会停留在最后一帧
}
@-webkit-keyframes myfirst /* Safari and Chrome */
{
0% { left:500px;height:0px; bottom:50px;color:#fff;}
100% { left:500px; height:80px;bottom:50px;color:red;}
}
</style>
</head>
<body>
<div>11111</div>
</body>
</html>
