div#Top {
	width: 50em;
	border: 0px solid red;
	text-align: center;
	clear: both;
	}

p.pleft { text-align: left; }
p.pright { text-align: right; }

div#thema {
	clear: both;
	width: 48em;
	padding: 1em;
	border: 1px solid gray;
}
p.period {
	font-size: 1.6em;
	text-align: left;
	}
p.book {
	font-size: 1.6em;
	text-align: right;
	}

h1 { font-size: 3.2em;}
h2 { font-size: 3.0em;}