body  { background-image: url(../images/fondo.gif); background-repeat: repeat-y; background-position: center 0; margin: 0; padding: 0 }

a#firma      { background: url(../images/firmagian.gif) no-repeat left top; text-indent: -9999px; display: block; width: 230px; height: 148px }
a#firma:hover      { background-position: 0 -148px }
a { outline-width: 0 }

#content               { text-align: center; margin: -247px 0 0 -397px; padding: 0; position: absolute; z-index: 3; top: 50%; left: 50%; width: 794px; height: 494px; overflow-x: hidden; overflow-y: hidden        }