.qr-modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
}

.qr-modal-content {
    background-color: #fff;
    margin: 15% auto;
    padding: 20px;
    border-radius: 10px;
    width: 300px;
    position: relative;
    text-align: center;
}

.qr-close {
    position: absolute;
    right: 10px;
    top: 5px;
    font-size: 24px;
    cursor: pointer;
    color: #666;
}

.qr-close:hover {
    color: #000;
}

.qr-modal img {
    max-width: 200px;
    margin: 20px auto;
    display: block;
}

.qr-modal h3 {
    margin-top: 0;
    color: #333;
}