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 { position: absolute; width: 100px; height: 100px; background-color: coral; color: white; top: 0; -webkit-animation: mymove 5s infinite; /* Chrome, Safari, Opera */ animation: mymove 5s infinite; } /* Chrome, Safari, Opera */ @-webkit-keyframes mymove { 50% {top: 300px;} } /* Standard syntax */ @keyframes mymove { 50% {top: 300px;} } </style> </head> <body> <p>逐步改变 padding-right 属性，从 0px 到 300px:<p> <div id="myDIV"> <h1>myDIV</h1> </div> <p>top 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> </body> </html>
运行结果