@media (min-width: 768px) {
    .nav-link {
        padding: .25rem 0;
        color: rgba(255, 255, 255, .5);
        background-color: transparent;
        border-bottom: .25rem solid transparent;
        margin-left: 1rem;
    }

    .nav-link:hover,
    .nav-link:focus {
        border-bottom-color: rgba(0, 0, 0, .25);
    }

    .active {
        border-bottom-color: #777;
    }

}