#cajaSpan {
   padding-left: 5;
   font-size: 8pt;
   border: 1px solid;
   border-color: #427B96;
   font-family: Tahoma;
   position: absolute;
   background-color: #ADD4E6;
   color: #4A4A4A;
   z-index:1;
   font-weight:normal;
   text-align:left;
    
   /*----Transparencia----*/
   opacity:.99; 				/* Mozilla */
   filter:alpha(opacity=99);	/* IE */
}

.descripcion_b { color: #417C97; float:left; font-weight:bold; }
.fecha_b { color: #417C97; }
.categoria_b { color: #ffffff; }
.derecha_b { float:right; font-weight:bold; }