.nav-link {
    color: #616161;
}

.nav-link.disabled {
    color: #a6a6a6;
    background-color: inherit;
}

.nav-link.disabled:hover {
    color: #a6a6a6;
    background-color: inherit;
    cursor: not-allowed;
}

.nav-link:hover {
    background-color: #E0E0E0;
    color: #424242;
}


.nav-link.active {
    color: #2196F3;
    background-color: #E0E0E0;
}