.modal {
    display: none;
    position: fixed;
    z-index: 999;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.9);
}

.modal-content {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100%;
    width: 100%;
}

.modal img {
    max-width: 100%;
    max-height: 100vh;
    object-fit: contain;
}

.close {
    position: absolute;
    top: 15px;
    right: 35px;
    color: #f1f1f1;
    font-size: 40px;
    font-weight: bold;
    cursor: pointer;
}

.close:hover {
    color: #bbb;
}

/* Added styles for demo */
.thumbnail {
    width: 200px;
    height: 150px;
    object-fit: cover;
    cursor: pointer;
    margin: 20px;
    border-radius: 8px;
}