div#presentacion{ width: 840px; height: 720px; margin-top: 0; margin-right: auto; margin-left: auto; }
div#pie { width: 700px; height: 85px; margin-top: 5px; margin-right: auto; margin-left: auto;}
div#cabecera { width: 800px; height: 125px; margin-top: 0; margin-right: auto; margin-left: auto; }
div#menu {width: 800px; margin-right: auto; margin-left: auto; margin-top: 1px }
div#contenedor { width: 800px; height: 640px; margin-right: auto; margin-left: auto; background-color: white;  }
div#contenidos { background-color: white; width: 550px; height: 600px; position: absolute; overflow: scroll; margin-right: 0; margin-top: 30px; margin-left: 15px; border-right: 1px solid #bababa; }
div#columna { background-color: white;  width: 205px; height: 600px; position: absolute;  margin-right: 0; margin-top: 30px; margin-left: 580px; }
div#menupie{ width: 800px; height: 50px; margin-top: 30px; margin-right: auto; margin-left: auto; }