body {
    margin: 15px 5% 15px 5%;
    font-family: Georgia, Rockwell, Garamond, Serif;
    line-height: 1.4em;
    font-size: 0.9em;
    text-align: left;}
#credits {
    font-family: Verdana, Geneva, Helvetica, Sans-Serif;
    text-align: center;
    background-color: #F9F9F9;
    border: 1px solid #C0C0C0;
    font-size: smaller;}
#headline {
    font-family: Verdana, Geneva, Helvetica, Sans-Serif;
    text-align: center;
    font-weight: bold;
    font-size: 2em;}
.nav {
    font-family: Verdana, Geneva, Helvetica, Sans-Serif;
    background-color: #F9F9F9;
    margin-top: 10px;
    text-align: right;
    padding: 2px 10px 5px 10px;
    border: 1px solid #C0C0C0;
    border-style: solid none solid none;}
.totop {
    font-family: Verdana, Geneva, Helvetica, Sans-Serif;
    text-align: right;
    font-weight: bold;}
h1 {
    font-family: Verdana, Geneva, Helvetica, Sans-Serif;
    font-weight: bold;
    font-size: 1.5em;
    margin-bottom: 5px;}
h2 {
    font-family: Verdana, Geneva, Helvetica, Sans-Serif;
    font-weight: normal;
    font-size: 1.2em;
    text-decoration: overline underline;
    margin-bottom: 5px;
    margin-top: 2em;}
pre {
    margin-left: 3em;
    font-size: 1.2em;}
.diagram {
    padding: 4px;
    border: 1px solid #C0C0C0;}
code {
    font-size: larger;
    color: #FF641A;}
dt {
    font-weight: bold;}