body, html { background-image: url("sfondo.gif"); background-repeat: repeat; 
  background-size: cover;  /* a pieno schermo ridimensionabile ! */
	background-position: top center; background-color: #ffff33;
  font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 14px; color: maroon; }
 
/* --------------- immagini fluide ----------------- */
img { max-width: 100%; margin: 0px; border: 0px; padding: 0px;}

/* --------------- finestre ---------------- */
#finestrapiccola { display: block; text-align: center; margin: 0px; border: 4px solid #FF0000; padding: 0px;}
#finestragrande { display: none; text-align: center; margin: 0px; border: 10px solid #FF0000; padding: 0px;}

@media only screen and (min-width: 460px) {
#finestrapiccola { display: none; }
#finestragrande { display: block; }
}