body {
	max-width: 580px;
	margin-left: auto;
	margin-right: auto;
	margin-top: 60px;
	padding-bottom: 60px;
	
	line-height: 1.4;
	
	font-family: georgia, serif;
}

p.ref {
	font-size: small;
	color: gray;
}

p.ref a {
	color: #222;
}

h1, h2, p.ref {
	font-family: helvetica, sans-serif;
}

th {
    border-bottom: 1px solid black;
}