.contents {
	font-family: arial, helvetica, sans-serif;
	font-size: 80%;
	color: #000000;
}

.contents h1 {
	font-size: 200%;
	font-weight: bold;
}

.contents h2 {
	font-size: 160%;
	font-weight: bold;
}

.contents h3 {
	font-size: 125%;
	font-weight: bold;
}

.contents h4 {
	font-size: 105%;
	font-weight: bold;
}

.contents h5 {
	font-size: 90%;
	font-weight: bold;
}

.contents pre {
	font-family: courier-new, courier;
}