HTML
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>笔下光年</title>
</head>
<body>
<p>逐步改变 margin-left, 从 0px 到 50px :<p>
<div id="myDIV">
This is my DIV element.
</div>
<p>margin-left 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>
CSS
#myDIV {
height: 200px;
background-color: lightblue;
border: 1px solid black;
animation: mymove 5s infinite;
-webkit-animation: mymove 5s infinite; /* Chrome, Safari, Opera */
}
/* Chrome, Safari, Opera */
@-webkit-keyframes mymove {
50% {margin-left: 50px;}
}
/* Standard syntax */
@keyframes mymove {
50% {margin-left: 50px;}
}