.navbar-expand-lg .big-menu .navbar-nav .nav-link {
    border-bottom: 0;
}
.navbar-expand-lg .navbar-nav .nav-link {
    padding: 10px 15px 2px;
}
@media (min-width: 992px) {
    .navbar-expand-lg .navbar-nav .nav-item.active, .navbar-expand-lg .navbar-nav .nav-item:hover {
        border-bottom: 3px solid var(--main-color);
    }
}