HTML
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>笔下光年</title>
</head>
<body>
<p>clip 属性支持动画效果, 但确无法达到预期效果。</p>
<p><b>注意：</b>Internet Explorer 9 及更早 IE 版本不支持 CSS 动画。</p>
<div id="myDIV">
<h1>myDIV</h1>
</div>
</body>
</html>
CSS
#myDIV {
width: 100px;
height: 100px;
background-color: coral;
color: white;
position: absolute;
-webkit-animation: mymove 5s infinite; /* Chrome, Safari, Opera */
animation: mymove 5s infinite;
}
/* Chrome, Safari, Opera */
@-webkit-keyframes mymove {
50% {clip: rect(0px, 50px, 50px, 0px);}
}
/* Standard syntax */
@keyframes mymove {
50% {clip: rect(0px, 50px, 50px, 0px);}
}