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codice:
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<html>

<head>
	<meta http-equiv="content-type" content="text/html;charset=ISO-8859-1">
	<meta name="generator" content="Adobe GoLive 6">
	<title>ciao ciao</title>
	<style type="text/css" media="screen">
		body { text-align: center; }
		table { margin: auto; }
		div { margin:auto; padding:0px; } 

		#livello    { width: 660px; height: 500px; }
	</style>
</head>

<body bgcolor="#ffffff">
	<div id="livello">
		<table bgcolor="#33CCCC" width="660" height="100%" border="0" cellspacing="0" cellpadding="0">
			<tr>
				<td></td>
			</tr>
		</table>
	</div>
</body>

</html>