div.frames div.frame-container {
    border: 4px solid green;
    border-radius: 10px;
    padding: 5px;
    margin: 10px;
}

img.frame {
    max-width: 400px;
    max-height: 400px;
    display: inline-block;
}

img.qr {
    max-width: 200px;
    max-height: 200px;
    display: inline-block;
}

img.roi {
    max-width: 100px;
    max-height: 100px;
    display: inline-block;
}

h3.warning {
    color: #ff0000
}