body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    line-height: 1.6;
    background: #f9f9f9;
    color: #333;
}

header,
footer {
    background: #004d40;
    color: #fff;
    text-align: center;
    padding: 1rem;
}

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

a {
    color: #00695c;
}