body {
    margin: 0;
    font-family: Arial, sans-serif;
    background-color: #f2f2f2;
}

nav {
    background-color: #333;
    text-align: center;
    padding: 10px;
}

nav a {
    color: white;
    text-decoration: none;
    margin: 15px;
}

main {
    padding: 20px;
}

section {
    margin-bottom: 30px;
}

img, iframe {
    max-width: 100%;
    height: auto;
}

footer {
    background-color: #222;
    color: white;
    text-align: center;
    padding: 15px;
}