<!DOCTYPE html>
<html>
<head>
	<meta charset="utf-8">
	<title>barcode testing</title>
	<style>
		body {
			height: 100%;
			width: 100%;
			margin: 0;
			padding: 0;
		}

		.fixed-background {
			position: absolute;
			top: 0;
			left: 0;
			height: 100%;
			width: 100%;
			overflow: hidden;
		}

		.myimg {
			height: inherit;
		}
	</style>
</head>
<body>
<center>
	<div class="fixed-background">
		<?php 
			echo "test";
		?>        
    </div>
</center>
</body>
</html>