body{background:#fff;margin:0;overflow:hidden;overflow-x:hidden;overflow-y:hidden;width:100%;height:100%;color:#fff;font-size:35px;line-height:1.25;text-align:center}.cell{position:absolute;background-repeat:no-repeat;background-position:center center}table.ctn{border:0;padding:0;margin:0;width:100%;height:100%;border-collapse:collapse}table.ctn tr{border:0;padding:0;margin:0;height:100%;width:100%}table.ctn tr td{border:0;padding:5px;margin:0;height:100%;width:100%;white-space:nowrap}.qrcode img{padding:5px;background-color:#fff}.qrcode img .blk{background-color:#000}