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

nav {
    background: #222;
    color: white;
    padding: 15px;
    display: flex;
    justify-content: space-between;
}

nav ul {
    list-style: none;
    display: flex;
    gap: 20px;
}

main {
    text-align: center;
    padding: 40px;
}

img {
    width: 300px;
    margin: 20px 0;
}