body {
 font-family: sans-serif;
 max-width: 600px;
 margin: auto;
}
h1, h2, h3,
h4, h5, h6 {
 font-family: Futura, "URW Gothic", "Century Gothic";
}
a {
 color: gray;
}
a:hover {
 color: #101010;
}
a:visited {
 color: dimgray;
}
.content {
 color: #101010;
 overflow: auto;
}
.nav {
 padding: 0;
 list-style: none;
}