body {
	background-color: lightgray;
	margin: 0.5em;
}

header {
	max-width: 42em;
	margin-left: auto;
	margin-right: auto;
}

header h1 {
	color: dimgray;
	text-align: center;
}

nav, article {
	max-width: 42em;
	margin-left: auto;
	margin-right: auto;
	padding-top: 1ex;
	padding-bottom: 1ex;
	padding-left: 1em;
	padding-right: 1em;
}

nav {
	background: whitesmoke;
}

nav h2 {
	color: darkslategray;
}

article {
	background: ghostwhite;
}

article h2 {
	color: slateblue;
}

article h3 {
	color: darkslateblue;
}

article h4 {
	color: midnightblue;
}

footer {
	margin-top: 2pc;
	border-top: thin solid gray;
	font-size: small;
}

p {
	line-height: 1.3;
}

footer p {
	padding: 4pt 8pt;
}

hr {
	max-width: 44em;
}

.am {
	padding-left: 1em;
	white-space: pre;
}