.topnav {											/* Add a black background color to the top navigation */
  overflow: hidden;
  background-color: darkslategrey;
}

.topnav a {											/* Style the links inside the navigation bar */
    float: left;
    display: block;
    color: white;									/* #f2f2f2 cambia il colore del testo anche nel toggle, incluse le barre ed il bordo */
    font-family:Muli, Tahoma;
    font-size : 18px;  
    text-align: center;
    padding: 14px 16px;								/* 14px altezza 16px larghezza  */
    text-decoration: none;							/* none  */
    /*    border: solid ;	
    min-width: 100px;							caratteristiche bordo */
}

.topnav a:hover {
  background-color: lightgray ;  							/* Change the color of links on hover */
  color: black;
}

.topnav .icon {		
  display: none;									/* Hide the link that should open and close the topnav on small screens */
}

@media screen and (max-width: 600px) {				/* When the screen is less than 600 pixels wide, hide all links, except for the first one ("Home"). Show the link that contains should open and close the topnav (.icon) */
  .topnav a:not(:first-child) {display: none;}
  .topnav a.icon {
    float: right;
    display: block;
  }
}

@media screen and (max-width: 600px) {				/* The "responsive" class is added to the topnav with JavaScript when the user clicks on the icon. This class makes the topnav look good on small screens (display the links vertically instead of horizontally) */
  .topnav.responsive {position: relative;}
  .topnav.responsive .icon {
    position: absolute;
    right: 0;
    top: 0;
  }
  .topnav.responsive a {
    float: none;
    display: block;
    text-align: left;
  }

}