body {
    background: #f4f4f4;
    color: #111;
    font-family: monospace;
    margin: 0;
    padding: 0;
}
header {
    background: black;
    color: white;
    padding: 1em;
    text-align: center;
}
.motto {
    font-style: italic;
    font-size: 1.1em;
}
nav ul {
    list-style: none;
    padding: 0;
}
nav ul li {
    display: inline;
    margin: 0 1em;
}
nav ul li a {
    color: white;
    text-decoration: none;
}
.intro {
    padding: 2em;
    background: white;
    margin: 1em;
    border: 2px solid black;
    font-size: 1.1em;
}
footer {
    text-align: center;
    padding: 1em;
    background: #222;
    color: #ccc;
}