*{padding:0;margin:0;font-family:'微软雅黑';}
#test{width:1000px;height:350px;margin:0 auto;top:30px;position:relative;overflow:hidden;}
#test ul li{list-style:none;float:left;border:#FFF solid 20px;margin-left:-40px;overflow:hidden;width:250px;height:350px;position:relative;}
#test ul li img{position:absolute;}
.btnleft{position:absolute;left:10px;top:155px;font-size:50px;color:#FFF;opacity:0.5;}
.btnright{position:absolute;right:35px;top:155px;font-size:50px;color:#FFF;opacity:0.5;}
.btngroup span:hover{opacity:1;cursor:pointer;}