<html><head><meta charset="utf-8"> <title>手册网(www.shouce.ren)</title> <style> #myDIV { width: 50%; background-color: lightblue; overflow: auto; border: 1px solid black; animation: mymove 5s infinite; /* Chrome, Safari, Opera */ animation: mymove 5s infinite;}/* Chrome, Safari, Opera */@-webkit-keyframes mymove { 50% {min-width: 800px;}}/* Standard syntax */@keyframes mymove { 50% {min-width: 800px;}}</style></head><body><p>逐步改变 max-width, 从 "none" 到 "800px":<p><p><strong>注意:</strong> min-width 属性会覆盖 width 属性。</p><div id="myDIV"> <p>This DIV element has a pre-defined width: 50%.</p> <p>An animation will gradually change the min-width to 800 pixels.</p></div><p>min-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></body></html>