body {
    font-family: Arial, Helevetica, sans-serif;
	font-size: 12px;
	background-color:#EEE;
	margin:0;
	padding:0 0 10px 0;
	text-align:justify;
}

h1, h2 {
	text-align:center;
}
div {
	width:600px;
	margin:10px auto;
}

div#nav {
	text-align:center;
}

div#content {
    border:1px solid gray;
	padding:10px;
}

span.keyword {
	color:red;
}