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<!DOCTYPE html>
<html>
<head>
<style>
div
{
width:100px;
height:100px;
background:yellow;
transition-property:width 1s linear 2s;
/* Firefox 4 */
-moz-transition:width 1s linear 2s;
/* Safari and Chrome */
-webkit-transition:width 1s linear 2s;
/* Opera */
-o-transition:width 1s linear 2s;
}
div:hover
{
width:200px;
}
</style>
</head>
<body>
<div></div>
<p>请把鼠标指针放到黄色的 div 元素上，来查看过渡效果。</p>
<p><b>注释：</b>本例在 Internet Explorer 中无效。</p>
<p><b>注释：</b>这个过渡效果会在开始之前等待两秒。</p>
</body>
</html>