body {
    font-family: Verdana, sans-serif;
    margin: 0;
    background-color: #f5f5f5;
}

header, footer {
    background-color: #222;
    color: white;
    text-align: center;
    padding: 20px;
}

main {
    max-width: 800px;
    margin: 40px auto;
    background: white;
    padding: 20px;
}

article h2 {
    color: #333;
}