body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0 1em;
    background-color: #f4f4f4;
}

header {
    background-color: #222;
    color: #fff;
    padding: 1em;
}

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

nav a {
    margin-right: 1em;
}

main {
    padding: 1em 0;
}

footer {
    font-size: 0.8em;
    text-align: center;
    padding: 1em 0;
}