#cuerpo		{background: black; padding: 0; margin: 0; border: 0; font-size: 5}
#ventana	{position: relative; width:1000px; margin-left: -500px; left: 50%; top: 0px; bottom: 0; background-color: white;}

#columna_1	{position:absolute; left: 0px;  top: 0px ;	width: 200px; background-image: url('img/fondo.jpg')}
#txt_col1	{height: 400px; }

#columna_2	{position:absolute; left:200px; top: 0px; width: 580px; background-color: white; padding: 0px 20px}
#cabecera	{left: 0px; top: -5px; width: 590px; height: 60px;}

#columna_3	{position:absolute; left:800px; top: 0px ; width: 200px; padding: 0px 20px}