.maskLayer{z-index:500}.maskLayer,.maskLayer .backgroundColor{width:100%;height:100%;position:absolute;left:0;top:0}.maskLayer .backgroundColor{background-color:rgba(0,0,0,.4);z-index:501}.maskLayer .mainpart{width:1450px;height:770px;background-color:#000;position:absolute;left:calc(50% - 725px);top:40px;z-index:502}.maskLayer1{z-index:500}.maskLayer1,.maskLayer1 .backgroundColor{width:100%;height:100%;position:absolute;left:0;top:0}.maskLayer1 .backgroundColor{background-color:hsla(0,0%,88.2%,.15);z-index:501}.maskLayer1 .mainpart{width:1600px;height:800px;background-color:#000;position:absolute;left:calc(50% - 800px);top:calc(50% - 400px);z-index:502;border:1px solid #eee}