h1 {
	background: #add8e6;
	padding: 4px;
	font-family: "Arial";
	border: 2px solid black;
	color: blue;
	text-align: center;
	}

h2, h3, h4 {
	background: #add8e6;
	padding: 4px;
	font-family: "Arial";
	border: 2px solid black;
	color: blue;
	text-align: center;
	}