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代码编辑器:
<!DOCTYPE html> <meta charset="utf-8"><link href="/static/next/css/tryit.css?v=2017082407" rel="stylesheet"/> <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> <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> <footer>简单教程,简单编程<br/>Copyright © 简单教程 www.twle.cn</footer>
运行结果: