h1{
	background:black;
	color:white
}

h2{
	text-indent:0.5em;
	background:dimgray;
	color:white
}

h3{
	text-indent:1.5em;
	background:gray;
	color:white
}

h4{
	text-indent:2em;
	background:darkgray;
	color:white
}

address{
	text-align:right
}