body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
}

header {
    background-color: #333;
    color: #fff;
    padding: 1rem;
}

header h1 {
    margin: 0;
}

header a {
    color: #fff;
    text-decoration: none;
}

main {
    padding: 1rem;
}

a {
    color: #333;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}