.member-qr {
    display: inline-flex;
    max-width: 100%;
    padding: 20px;
    background-color: #fff;
    margin-left: auto;
    margin-right: auto;
}
.member-qr img {
    display: block;
    margin-left: auto;
    margin-right: auto;
    max-width: 100%;
}