设置一个div 盒子
<div class="ani"></div>
设置css 样式
.ani{width:480px;height:320px;margin:50px auto;overflow: hidden;box-shadow: 0 0 5px rgba(0,0,0,1);background-size:cover;background-position: center;-webkit-animation-name:"loops";-webkit-animation-duration:20s;-webkit-animation-iteration-count:infinite;}@-webkit-keyframes "loops"{0%{background: url(img/advert_1.jpg) no-repeat;}25%{background: url(img/advert_2.jpg) no-repeat;}50%{background: url(img/advert_3.jpg) no-repeat;}75%{background: url(img/advert_4.jpg) no-repeat;}100%{background: url(img/advert_5.jpg) no-repeat;}}