html, body {
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    font-family: 'Zilla Slab', serif;
    font-size: 18px;
}

header {
    text-align: center;
    margin: 1em 1em 2em 1em;
}

div#head h1 {
    text-align: center;
}

div#logo {
    max-width: 512px;
    margin-left: auto;
    margin-right: auto;
}

div#content {
    margin-left: 2em;
    margin-right: 2em;
}

footer {
    text-align: center;
    margin-left: 1em;
    margin-right: 1em;
    font-size: smaller;
}