<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>笔下光年</title> </head> <body> <p>逐步改变 border-top-right-radius 属性从 0 到 50px:<p> <div id="myDIV"></div> <p>border-top-right-radius 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>
#myDIV { width: 300px; height: 200px; border: 1px solid black; -webkit-animation: mymove 5s infinite; /* Chrome, Safari, Opera */ animation: mymove 5s infinite; } /* Chrome, Safari, Opera */ @-webkit-keyframes mymove { 50% {border-top-right-radius: 50px;} } /* Standard syntax */ @keyframes mymove { 50% {border-top-right-radius: 50px;} }