<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>三体教程(santii.com)</title>
<style>
#myDIV {
width: 500px;
background-color: coral;
color: white;
-webkit-animation: mymove 1s ; /* Chrome, Safari, Opera */
animation: mymove 2s ;
}
/* Chrome, Safari, Opera */
@-webkit-keyframes mymove {
from {
width:0%;
}to{
width:100%
}
}
/* Standard syntax */
@keyframes mymove {
from {
width:0%;
}to{
width:100%
}
}
</style>
</head>
<body>
<p> width 属性支持动画效果。</p>
<p><b>注意：</b>Internet Explorer 9 及更早 IE 版本不支持 CSS 动画。</p>
<p>逐步改变 DIV 元素的宽度，从 120px 到 500px:<p>
<div id="myDIV">
<h1>My DIV</h1>
</div>
</body>
</html>
