body {
    font-family: Arial, sans-serif;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: #333;
    padding: 10px 20px;
    margin-bottom: 20px;
}

.pagination {
    display: flex;
    gap: 10px;
}

nav a {
    margin-right: 10px;
    text-decoration: none;
    color: #fff;
}

.gallery {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    margin: 10px;
}

.thumbnail {
    overflow: hidden;
    position: relative;
    width: 100%;
    padding-top: 66.67%;
    background-color: #f0f0f0;
}

.thumbnail img {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transform: translate(-50%, -50%);
}