@charset "utf-8";

.banner{position:relative;float:left;}
.Bbotton{width:100%;position:absolute;left:0;bottom:30px;text-align:center;}
.Bbotton ul{display:inline-block;}
.Bbotton ul li{width:10px;height:10px;margin:0 10px;float:left;background:#707070;border-radius:10px;transition:all 0.3s ease-in 0s;}
.Bbotton ul li:hover,.Bbotton ul li.hover{width:30px;background:#FFF;margin:0;}