fmpq.com
源代码：
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<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>Fmpq教程(fmpq.com)</title> <style> #myDIV { width: 500px; background-color: lightblue; overflow: auto; border: 1px solid black; -webkit-animation: mymove 5s infinite; /* Chrome, Safari, Opera */ animation: mymove 5s infinite; } /* Chrome, Safari, Opera */ @-webkit-keyframes mymove { 50% {max-height: 100px;} } /* Standard syntax */ @keyframes mymove { 50% {max-height: 100px;} } </style> </head> <body> <p>逐步改变 max-height, 从 "none" 到 "100px":<p> <div id="myDIV"> <p>This DIV element does not have a pre-defined height.</p> <p>An animation will change the max-height, from "none" to "100px".</p> <p>The height of this DIV element will not exceed 100 pixels.</p> </div> <p>max-height 属性支持动画效果。</p> <p><b>注意:</b> 目前 max-height 属性在 Chrome 浏览器下不会改变 <em>gradually（灰阶）</em>, 在 Firefox 都无法起作用。</p> <p><b>注意：</b>Internet Explorer 9 及更早 IE 版本不支持 CSS 动画。</p> </body> </html>
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