3 Background Images 
<html lang="en" xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
	<head>
		<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
		<title>My Example</title>
		<link media="screen,print" type="text/css" href="css/main.css" rel="stylesheet">
	</head>
	<body></body>
</html>
html {
	background: url('images/background.png');
}

head {
	display: block;
	background: url('images/top_background.png');
	height: 181px;
	margin-bottom: -181px;
}	

body {
	background: url('images/leaves.gif') top center no-repeat;
}
px value css "align" attribute