<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>慕课网教程</title>
<style>
div
{
width:100px;
height:100px;
background:red;
/ position:relative;/
animation:mymove 3s;
animation-iteration-count:1;
animation-fill-mode:forwards;
/* Safari 和 Chrome */
-webkit-animation:mymove 3s;
-webkit-animation-iteration-count:1;
-webkit-animation-fill-mode:forwards;}
@keyframes mymove
{
from {width:1%;}
to {width:100%;}
}
@-webkit-keyframes mymove / Safari 和 Chrome /
{
from {width:1%;}
to {width:100%;}
}
</style>
</head>
<body>
<p><strong>注意：</strong>Internet Explorer 9 及其之前的版本不支持 animation-fill-mode 属性。</p>
<div></div>
</body>
</html>