/* Animazione del bottone toggle */
 #nav-toggle {
     position: absolute;
     left: 16px;
     top: 20px;
     margin-bottom:30px;
}
 #nav-toggle {
     cursor: pointer;
     padding: 0px 35px 16px 0px;
}
 #nav-toggle span, #nav-toggle span:before, #nav-toggle span:after {
     height: 1px;
     width: 17px;
     background: white;
     position: absolute;
     display: block;
     content: '';
}
 #nav-toggle span:before {
     top: 0px;
}
 #nav-toggle span:after {
     bottom: -7px;
}
 #nav-toggle span, #nav-toggle span:before, #nav-toggle span:after {
     transition: all 150ms ease-out;
}
 #nav-toggle.active span {
     background-color: transparent;
}
 #nav-toggle.active span:before, #nav-toggle.active span:after {
     top: 0px;
}
 #nav-toggle.active span:before {
     transform: rotate(45deg);
}
 #nav-toggle.active span:after {
     transform: rotate(-45deg);
}