*{box-sizing:border-box}app-root,body,html{display:block;width:100%;height:100%;margin:0;padding:0;background-color:#000;color:#fff;font-family:Roboto,sans-serif}app-image,app-qr,app-ui{display:block;width:100%;height:100%;top:0;left:0;right:0;bottom:0;position:absolute;overflow:hidden}