.banner{position:relative;width:100%;overflow:hidden}
.carousel{position:relative;list-style:none;padding:0}
.carousel .item{display:nones;float:left;position:relative}
.carousel .active{display:block}
.carousel img{display:block;max-width:100%;height:auto}
.banner>ul{top:-12px}
.banner .pointer{position:absolute;bottom:0;padding:15px}
.banner .pager-prev,.banner .pager-next{position:absolute;display:none;top:50%;margin-top:-25px}
.banner .pager-prev{left:20px}
.banner .pager-next{right:20px}
.banner:hover .pager-prev,.banner:hover .pager-next{display:block}