html, body {
	background: #ccc;
	height: 100%;
	margin: 0;
	padding: 0;
	font: 100% Verdana, Georgia, serif;
	color: #333333;
	text-align: center;
}                

div#centrado {
	border: 0;
/*	background-color: white; */
	width: 50%;
	position: absolute;
	left: 25%;
	top: 45%;
	color: black;
}

.viernes{
	font-weight: bold;
	font-size: 36px;
	color: green;
}

.noviernes{
	font-size: 28px;
	color: red;
}

#cabecera {
   font-family: Verdana, Arial, Helvetica, sans-serif;
   text-align: left;
   font-size: 12px;
   margin: 10px;
   float: left;
}

#cabecera2 {
   font-family: Verdana, Arial, Helvetica, sans-serif;
   text-align: center;
   font-size: 12px;
   margin: 10px;
   float: center;
}

#pie {
   font-family: Verdana, Arial, Helvetica, sans-serif;
   text-align: right;
   font-size: 12px;
   margin: 10px;
   float: right;
}