<p><strong>注释：</strong>Internet Explorer 9 以及更早的版本不支持 animation-name 属性。</p>
<!DOCTYPE html>
<html>
<head>
<style>
div
{
width:100px;
height:100px;
background:red;
position:relative;
animation:mymove infinite;
animation-duration:2s;
/* Safari and Chrome */
-webkit-animation:mymove infinite;
-webkit-animation-duration:2s;
}
@keyframes mymove
from {top:0px;}
to {top:200px;}