body {
    background-color: #E9EAED;
    font-family: serif;
}

div.contents {
    background-color: white;
    max-width: 50em;
    margin-left: auto;
    margin-right: auto;
    padding-left: 3em;
    padding-right: 3em;
    padding-top: 1em;
	padding-bottom: 2em;
    margin-top: 1em;
}

h1, h2, h3 {
    font-family: sans-serif;
}

h1 {
    margin-top: 0;
}

h2 {
    border-bottom: 1px solid black;
    font-weight: normal;
}

h3 {
	font-weight: normal;
}

div.heading {
    text-align: center;
}

div.footer {
	font-size: smaller;
	font-style: italic;
	width: 70%;
	margin-left: auto;
	margin-right: auto;
}

.left {
	float: left;
}

.right {
	float: right;
}

.navigation {
	text-align: center;
	margin-bottom: 1em;
	font-size: small;
	font-family: sans-serif;
}

.navigation .left {
	width: 33%;
	text-align: left;
}

.navigation .centre {
	margin-left: auto;
	margin-right: auto;
	width: 33%;
}

.navigation .right {
	width: 33%;
	text-align: right;
}

img.figure {
    display: block;
    margin-left: auto;
    margin-right: auto;
    border: 0;
}

hr {
	border: 0 none;
	height: 1px;
	color: black;
	background-color: black;
}

.toc-h1 {
	margin-top: 1.5em;
	margin-bottom: 0.2em;
	text-transform: uppercase;
	font-size: 120%;
	border-bottom: 1px solid black;
	width: 80%;
	font-family: sans-serif;
}

.toc-h2 {
	margin-left: 3em;
	margin-top: 0.5em;
	font-family: sans-serif;
}

.toc-h3 {
	margin-left: 6em;
	font-family: sans-serif;
}

.spacer {
	height: 1em;
}

dt {
	font-weight: bold;
}
