xxxxxxxxxx<html><head><meta charset="utf-8"> <title>W3Cschool教程(w3cschool.cn)</title> <style> div{ width:100px; height:100px; background:red; position:relative; animation:mymove 3s; animation-iteration-count:2; animation-fill-mode:forwards; /* Safari 和 Chrome */ animation:mymove 3s; animation-iteration-count:2; animation-fill-mode:forwards;}@keyframes mymove{ from {top:0px;} to {top:200px;}}@-webkit-keyframes mymove /* Safari 和 Chrome */{ from {top:0px;} to {top:200px;}}</style></head><body><p><strong>注意：</strong>Internet Explorer 9 及其之前的版本不支持 animation-fill-mode 属性。</p><div></div></body></html>