/************重置样式************/
*{margin: 0px;padding:0px;}
ul,li{list-style: none;}
a{text-decoration: none;}
/***独立样式**/
body{background-color: rgba(0,0,0,.8);}
.wrap{width: 1000px;margin:20px auto;}
.poster-main{
    width: 1200px;
    height: 500px;
    position: relative;
}
.poster-main .poster-btn{
    width: 100px;
    height: 270px;
    position: absolute;
    top:0;
    cursor: pointer;
}
.poster-main .poster-prev-btn{
    left:-200px;
    background:url('/zt/images/zuo.png') no-repeat;
    background-position: left center;
}
.poster-main .poster-next-btn{
    right:-200px;
    background:url('/zt/images/you.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;
}

.poster-list li img{
    width:100%
}