.select-images button {
    margin: 10px;
    padding: 10px 15px;
    cursor: pointer;
}

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

/* Popup content */
/* .modal-content {
    background: #fff;
    margin: 5% auto;
    padding: 20px;
    width: 60%;
    border-radius: 8px;
    text-align: center;
} */
 /* Popup content */
.modal-content {
    background: #fff;
    margin: 5% auto;
    padding: 20px;
    width: 60%;
    max-height: 70vh;   /* limit height */
    overflow-y: auto;   /* enable vertical scroll */
    border-radius: 8px;
    text-align: center;
}

.gallery img {
    width: 120px;
    margin: 10px;
    cursor: pointer;
    border: 2px solid transparent;
}

.gallery img:hover {
    border: 2px solid #007BFF;
}

.close-btn {
    float: right;
    cursor: pointer;
    font-size: 20px;
    font-weight: bold;
}