.poster-main{position: relative;width: 900px;height: 278px;padding-bottom: 66px;}
.poster-main a,.poster-main img{display:block;}
.poster-main .poster-list{width: 900px;height: 278px}
.poster-main .poster-list .poster-item{position: absolute;left: 0px;top: 0px;overflow: hidden;}
.poster-main .poster-list .poster-item img{height: 278px;width: 442px}
.poster-main .poster-btn{position: absolute;height: 100%;width:100px;top: 0px;z-index: 10;opacity: 1;}
.poster-main .poster-prev-btn{left: 0px;background: url("../../img/btn_l.png") no-repeat center center; cursor: pointer;}
.poster-main .poster-next-btn{right: 0px;background: url("../../img/btn_r.png") no-repeat center center; cursor: pointer;}