.qr-preview-wrap {
    width: 100%;
}

#qrCanvas {
    display: block;
    width: 100%;
    box-sizing: border-box;
    background: #fff;
    padding: 5.5556%;
    border-radius: 12px;
    line-height: 0;
}

#qrCanvas:empty {
    display: none;
}

#qrCanvas img,
#qrCanvas canvas {
    width: 100% !important;
    height: auto !important;
    display: block;
}

#qrCanvas canvas {
    display: none !important;
}