body {
	margin: 0;
	padding: 0;
	text-align: center;
	background: black;
	color: #000;
	font-family: Tahoma;
	font-size: 0.9em;
}

#centrato {
   width: 600px;
   height: 300px;
   position: absolute;
   top: 50%;
   left: 50%;
   margin: -150px 0 0 -300px;
}