<!DOCTYPE html>charset="utf-8"W3Cschool教程(w3cschool.cn)div{width:100px;height:100px;background:red;position:relative;animation:mymove 5s infinite;-webkit-animation:mymove 5s infinite; /*Safari and Chrome*/}@keyframes mymove{from {left:0px;}to {left:200px;}}@-webkit-keyframes mymove /*Safari and Chrome*/{from {left:0px;}to {left:200px;}}注意: Internet Explorer 9 及更早IE版本不支持动画属性。