<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>笔下光年</title> </head> <body> <p>逐步改变 border 属性:<p> <div id="myDIV"></div> <p>border 属性是所有边框属性的简写。</p> <p>可以通过单独的边框属性来查看动画效果。</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: 15px solid lightblue;} } /* Standard syntax */ @keyframes mymove { 50% {border: 15px solid lightblue;} }