body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 2rem;
    background: #f5f5f5;
    color: #333;
}
header, footer {
    background: #004d00;
    color: white;
    padding: 1rem;
    text-align: center;
}
main {
    text-align: center;
    margin-top: 2rem;
}
a {
    background: #007a33;
    color: white;
    padding: 0.5rem 1rem;
    text-decoration: none;
    border-radius: 5px;
}
a:hover {
    background: #005522;
}