div.code {
    margin:25px 0 40px 25px;
    padding:10px;
    width:700px;
    border:1px dashed #ddd;
    background-color:#f4f4f4;
}

div.code span.comment {
    font-style: italic;
    color:#888;
}

#nav {
    margin-top:10px;
}