.banner_he{overflow:hidden;background: #3a3a3a;}
.banner_he ul {list-style: none;width: 100%;overflow: hidden;}
.banner_he ul li{width: 100%;position: relative;}
.banner_he li a {display:block;}
.banner_he li a img{border:none;}
.closeBtn_he{text-align:center;position:absolute;left:0;bottom:0px;width:100%;z-index:10000}
.openBtn_he{text-align:center;position:absolute;left:0;top:0;width:100%;z-index:10001;display:none}
.closeBtn_he img,.openBtn_he img{cursor: pointer;display: inline-block;}