.wrap{width:1200px;margin:20px auto}.poster-main{width:609px;height:458px;position:relative}
.poster-main .poster-btn{width:100px;height:270px;position:absolute;top:0;cursor:pointer}
.poster-main .poster-prev-btn{left:0;background:url(/img/leftarrow.png) no-repeat;background-position:left center}
.poster-main .poster-next-btn{right:0;background:url(/img/rightarrow.png) no-repeat;background-position:right center}
.poster-main .poster-list .list-item{position:absolute;top:0;left:0}
.list-item a,.list-item a img{display:block;width:100%;height:100%;border:0}