console
<!DOCTYPE html>
<html>
<head>
<style>
div
{
width:100px;
height:100px;
background:red;
position:relative;
animation:mymove 5s infinite;
-webkit-animation:mymove 5s infinite; /* Safari and Chrome */
}
@keyframes mymove
{
0% {top:0px; background:red; width:100px;}
100% {top:200px; background:yellow; width:300px;}
}
@-webkit-keyframes mymove /* Safari and Chrome */
{
0% {top:0px; background:red; width:100px;}
100% {top:200px; background:yellow; width:300px;}
}
</style>
</head>
<body>
<p><strong>Note:</strong> Internet Explorer 9及更早版本不支持@keyframes规则.</p>
<div></div>
</body>
</html>