/*impostare altezza nav*/
body{
    padding-top: 78px;
}
.hidenav.nav-up {
    top: -78px;
}
.hidenav{
    z-index:9999!important;
    position: fixed;
    top: 0;
    transition: top 0.2s ease-in-out;
    width: 100%;
}
@media (max-width: 767px) {
    body{
        padding-top: 64px;
    }
}