.clearfix:after {

    content: "."; 

    display: block; 

    height: 0; 

    clear: both; 

    visibility: hidden;

}



.clearfix {display: inline-block;}



/* Hides from IE-mac \*/

* html .clearfix {height: 1%;}

.clearfix {display: block;}

/* End hide from IE-mac */



img {border:0;padding:0;margin:0;}

body {
	background-color: #FFFFFF;
	margin: 0px;
	padding: 0px;
}

div.caja_principal_interna {
    margin:0 auto;
	width: 100%;
	text-align: left;
	background-image: url(../images/fdo_caja_principal_interna.jpg);
	background-repeat: repeat-x;
	background-position: top;    
	background-color:#FFFFFF;}




/* CONTENIDO */


div.contenido {
    margin:0 auto;
	width: 964px;
	background-image: url(../images/fdo_separador_negro.gif);
}

div.columna_contenido {
	float:left;
	width: 521px;
}


div.columna_contenido_especial {
	float:left;
    padding-bottom: 10px;
	width: 705px;
	background-color:#FFFFFF;    
}
	
div.columna_derecha {
	float:left;
	width: 259px;}