p {
    margin-bottom: 3rem;
}

#scan {
    width: 3rem;
    height: 3rem;
    
    padding: 0.9rem;

    border-radius: 100%;
    border: solid 0.3rem cornflowerblue;
}

#scan > img {
    width: 100%;
    height: 100%;
}

@media (pointer: coarse) {
    #scan {
        width: 6rem;
        height: 6rem;
        padding: 1.5rem;
    }
}