body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
}

header {
    background-color: #4CAF50;
    color: white;
    padding: 1rem;
}

header nav a {
    color: white;
    margin-right: 1rem;
    text-decoration: none;
    font-weight: bold;
}

main {
    padding: 2rem;
}

.gallery img {
    width: 300px;
    margin: 0.5rem;
}

footer {
    background-color: #333;
    color: white;
    text-align: center;
    padding: 1rem;
    margin-top: 2rem;
}