body {
	background-color: black;
	color: white;
}

h1, h2 {
	background-color: gray;
	color: black;
	text-align: center;
	border-top: 1px solid white;
	border-bottom: 1px solid white;
	border-left: 1px solid white;
	border-right: 1px solid white;

}

h3 {
	background-color: black;
	color: white;
	text-align: center;
	
}

	
table.ex1 {
	table-layout: fixed;
	text-align: top;
	overflow: hidden;

}
	

a:visited {
	color: white;
	text-decoration: none;
	
}

a:link {
	color: white;
	text-decoration: none;

}

a:hover {
	text-decoration: underline;

}