html5实现动画效果

实现简单的左右滑动且有过渡效果，

div{

margin:300px 0 0 300px;

height:200px;

width:200px;

border:1px solid #0FC;

background-color:#930;

animation:myani 5s infinite alternate;

      animation-fill-mode:fordwards;

}

@keyframes myani{

form{background-color:#000;

    margin-left:0px;}

to{background-color:#FFF;

margin-left:700px;}

}

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