.biofer {  font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 12px; font-style: normal; font-weight: bold; color: #000000; text-decoration: none}
.txtinterno {  font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 12px; font-style: normal; font-weight: normal; font-variant: normal; color: #000000}
.sfondo {  background-attachment: fixed; background-image: url(../images/sfondo.gif); background-repeat: no-repeat; background-position: 200px 100px}