<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>填充</title>
<style type="text/css">
#box1{
width:130px;
height:100px;
padding:10px;
border:1px solid red;
animation:box 1.5s;
animation-iteration-count:infinite;
}
@keyframes box
{
0% {opacity: 1; width:130px;}
50% {opacity: 1; height:500px;width:145px;}
100% {opacity: 0.8; width:130px;height:100px;}
}
</style>
</head>
<body>
<div id="box1">这真的是盒子?</div>
</body>
</html>
stone310
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