body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background: #f7f7f7;
    color: #333;
}

header {
    background-color: #005bbb;
    color: white;
    padding: 2rem;
    text-align: center;
}

main {
    padding: 2rem;
    max-width: 800px;
    margin: auto;
}

footer {
    text-align: center;
    padding: 1rem;
    background: #e0e0e0;
    margin-top: 2rem;
    font-size: 0.9em;
}