trycss_anim_bottom 在线代码实例

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<!DOCTYPE html>
<html>
<head>
<style> 
#myDIV {
    position: absolute;
    width: 100px;
    height: 100px;
    background-color: coral;
    color: white;
    bottom: 0px;
    -webkit-animation: mymove 5s infinite; /* Chrome, Safari, Opera */
    animation: mymove 5s infinite;
}
/* Chrome, Safari, Opera */
@-webkit-keyframes mymove {
    50% {bottom: 300px;}
}
/* Standard syntax */
@keyframes mymove {
    50% {bottom: 300px;}
}
</style>
</head>
<body>
<p>逐步改变 bottom 属性从 0px 到 300px:<p>
<div id="myDIV">
  <h1>myDIV</h1>
</div>
<p>bottom 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>
 
 
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运行结果
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