body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
}

header {
    background-color: #333;
    color: #fff;
    text-align: center;
    padding: 1em;
}

main {
    padding: 20px;
}

.image-gallery {
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
}

.image-gallery a {
    text-decoration: none;
    margin: 10px;
}

.image-gallery img {
    max-width: 100%;
    height: auto;
    border: 1px solid #ddd;
    border-radius: 4px;
}