/* 二维码 */
.qr-code{
    display: flex;
    flex-direction: column;
    justify-content:center;
    align-items: center;
    color: #666;
    font-size: 14px;
    margin:20px 0 10px;
}
.qr-code img{
    width: 100px;
    height: 100px;
    padding:2px;
    margin-bottom: 3px;
}