.Bg_layer{position: fixed;top:0;right: 0;bottom: 0;left: 0;z-index: 99999;display: none}
.Bg_layer .bg{width: 100%;height: 100%;float: left;background: rgba(0,0,0,.5);}
.Bg_layer .cont{height: 521px;width: 1440px;background: #fff;background:url(../image/cytusBg.png) no-repeat;position: absolute;left: 50%;top: 50%;margin: -260px 0 0 -720px;padding: 25px 20px 0 65px}
.Bg_layer .cont .closeB{height: 50px;width: 50px;position: absolute;left: 1202px;top:-12px;cursor: pointer;}
.Bg_layer .cont .buttonA{position: relative;left: 671px;bottom: -281px}
.Bg_layer .cont .buttonA a,.Bg_layer .cont .buttonA a{height: 60px;width:175px;padding:0 10px;display: inline-block;line-height: 55px;color: #fff;font-size: 14px;text-decoration: none;}
.Bg_layer .cont .buttonA .right{margin-left: 20px}



.Bg_layer .cont1{background: url(../image/cytusBg.png) no-repeat;}
.Bg_layer .cont2{background: url(../image/demmoBg-1.png) no-repeat;}
.Bg_layer .cont3{background: url(../image/jubaoBg.png) no-repeat;}



.iphone_Bg{position: fixed;width: 100%;height: 100%;top: 0;left: 0;text-align: center;z-index: 99999;display: none;}
.iphone_Bg .jsDownBOxBtn{position:absolute;top:10px;right:10px;font-size:2em;width:2em;line-height: 2em;color:#fff;text-align: center;}
.iphone_Bg .but{position: absolute;bottom:4%;width: 100%;}
.iphone_Bg .but a{width: 45%;color: #fff;display: inline-block}
.iphone_Bg .but a img{width: 100%}

.iphone_Bg1{background: url(../image/iphone_bg.png) no-repeat center/100% 100%;}
.iphone_Bg2{background: url(../image/cytus_bgi.png) no-repeat center/100% 100%;}
.iphone_Bg3{background:#030201 url(../image/demmo_Bg.jpg) no-repeat bottom/100% auto;}