<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>笔下光年</title> </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> </html>
#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;}
}