.banner{position:relative;} .paging{position:absolute;bottom:20px;left:0;text-align:center;width:100%;} .paging ul li{font-size: 0; width: 15px; height: 15px;background:#b5b5b5;border-radius:100%;display: inline-block;margin:0 3px;} .paging ul li.on{background:#fff}