body {
    font-family: Arial, sans-serif;
    background-color: #f0f0f0;
    text-align: center;
    margin: 0;
}

h1 {
    margin-top: 20px;
}

.gallery {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    padding: 10px;
}

.thumb {
    margin: 10px;
    border: 1px solid #ccc;
    padding: 10px;
    background-color: #fff;
    box-shadow: 0 0 5px rgba(0, 0, 0, 0.1);
    cursor: pointer;
}

.thumb img {
    max-width: 200px;
    max-height: 200px;
}

/* Modal (background) */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0, 0, 0, 0.9);
    justify-content: center;
    align-items: center;
}

/* Modal Content (image) */
.modal-content {
    margin: auto;
    display: block;
    max-width: 90%;
    max-height: 90%;
}

/* Close Button */
.close {
    position: absolute;
    top: 15px;
    right: 35px;
    color: #fff;
    font-size: 40px;
    font-weight: bold;
    transition: 0.3s;
}

.close:hover,
.close:focus {
    color: #bbb;
    text-decoration: none;
    cursor: pointer;
}