.mobile-app-qr-popup:before{content:"";border-bottom:8px solid #fff;border-left:8px solid #0000;border-right:8px solid #0000;width:0;height:0;position:absolute;top:-8px;left:50%;transform:translate(-50%)}.mobile-app-qr-popup:after{content:"";border-bottom:9px solid #e5e5e5;border-left:9px solid #0000;border-right:9px solid #0000;width:0;height:0;position:absolute;top:-9px;left:50%;transform:translate(-50%)}