自动移动，目前css3是有这样的效果的，叫做css3动画
给你一个示例
你要注意的一点是目前这个只能支持最低为IE10及以上版本才能够运行的哦
Chrome 和 Safari 需要前缀 -webkit-。
本答案出自“我要编程”软件开发师训练平台免费课程。
<!DOCTYPE html><html>
<head>
<style>
div
{
width:100px
height:100px
background:red
position:relative
animation:myfirst 5s
-moz-animation:myfirst 5s /* Firefox */
-webkit-animation:myfirst 5s /* Safari and Chrome */
-o-animation:myfirst 5s /* Opera */
}
@keyframes myfirst
{
0% {background:red left:0px top:0px}
25% {background:yellow left:200px top:0px}
50% {background:blue left:200px top:200px}
75% {background:green left:0px top:200px}
100% {background:red left:0px top:0px}
}
@-moz-keyframes myfirst /* Firefox */
{
0% {background:red left:0px top:0px}
25% {background:yellow left:200px top:0px}
50% {background:blue left:200px top:200px}
75% {background:green left:0px top:200px}
100% {background:red left:0px top:0px}
}
@-webkit-keyframes myfirst /* Safari and Chrome */
{
0% {background:red left:0px top:0px}
25% {background:yellow left:200px top:0px}
50% {background:blue left:200px top:200px}
75% {background:green left:0px top:200px}
100% {background:red left:0px top:0px}
}
@-o-keyframes myfirst /* Opera */
{
0% {background:red left:0px top:0px}
25% {background:yellow left:200px top:0px}
50% {background:blue left:200px top:200px}
75% {background:green left:0px top:200px}
100% {background:red left:0px top:0px}
}
</style>
</head>
<body>
<p><b>注释：</b>本例在 Internet Explorer 中无效。</p>
<div></div>
</body>
</html>
经测试，采用Firefox 45.0.1存在闪烁问题，并发现以下浏览器的某个版本：微信内置浏览器、QQ浏览器、Safari手机浏览器及早期的Chrome可能存在类似情况，包括载入闪动，悬停后闪动。分析：Blink对transition中，属性transform的动画渲染存在差异，而Chrome中的最新版本，已经不存在此情况。解决方法：<style>.outter { height: 375px margin: 10px auto width: 500px }.inner{}img:hover { width:110% margin-left:-5% margin-top:-5%}img{width:100% transition:0.4s ease-in-out}</style>复制代码以上CSS，在IE10、IE11、Chrome及Firefox 45.0.1中调试通过：首次载入，及Ctrl+F5刷新，均不会有闪动情况下面是一个例子，具体的需要你自己慢慢学习。
<!DOCTYPE html><html>
<head>
<style>
div
{
width:100px
height:100px
background:red
position:relative
animation:myfirst 5s linear 2s infinite alternate
/* Firefox: */
-moz-animation:myfirst 5s linear 2s infinite alternate
/* Safari and Chrome: */
-webkit-animation:myfirst 5s linear 2s infinite alternate
/* Opera: */
-o-animation:myfirst 5s linear 2s infinite alternate
}
@keyframes myfirst
{
0% {background:red left:0px top:0px}
25% {background:yellow left:200px top:0px}
50% {background:blue left:200px top:200px}
75% {background:green left:0px top:200px}
100% {background:red left:0px top:0px}
}
@-moz-keyframes myfirst /* Firefox */
{
0% {background:red left:0px top:0px}
25% {background:yellow left:200px top:0px}
50% {background:blue left:200px top:200px}
75% {background:green left:0px top:200px}
100% {background:red left:0px top:0px}
}
@-webkit-keyframes myfirst /* Safari and Chrome */
{
0% {background:red left:0px top:0px}
25% {background:yellow left:200px top:0px}
50% {background:blue left:200px top:200px}
75% {background:green left:0px top:200px}
100% {background:red left:0px top:0px}
}
@-o-keyframes myfirst /* Opera */
{
0% {background:red left:0px top:0px}
25% {background:yellow left:200px top:0px}
50% {background:blue left:200px top:200px}
75% {background:green left:0px top:200px}
100% {background:red left:0px top:0px}
}
</style>
</head>
<body>
<p>本例在 Internet Explorer 中无效。</p>
<div></div>
</body>
</html>
