.nav-tabs { border-bottom: 2px solid #DDE1E6; }
.nav-tabs .nav-item { margin-bottom: 0; margin-left: 2rem; }
.nav-tabs .nav-item:first-child { margin-left: 0; }
.nav-tabs .nav-item .nav-link {
    margin-bottom: 0;
    position: relative;
    padding: .5rem 0;
    border: none;
    border-radius: 0;
    background-color: transparent;
    color: #848e99;
    font-weight: 700;
    -webkit-transition: all .2s ease-out;
    transition: all .2s ease-out;
}
.nav-tabs .nav-item .nav-link:after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 2px;
    -webkit-transition: all .2s ease-out;
    transition: all .2s ease-out;
}

.nav-tabs .nav-item .nav-link:hover { color: #282a3c; }
.nav-tabs .nav-item .nav-link:hover:after { background-color: #848e99; }

.nav-tabs .nav-item .nav-link.active { color: #282a3c; }
.nav-tabs .nav-item .nav-link.active:after { background-color: #0057ff; }

.nav-tabs-vertical { display: block; border-bottom: none; }
.nav-tabs-vertical .nav-item { margin-left: 0; border-bottom: 2px solid #DDE1E6; }

@media (max-width: 768px) {
    .nav-tabs-md-vertical { display: block; border-bottom: none; }
    .nav-tabs-md-vertical .nav-item { margin-left: 0; border-bottom: 2px solid #DDE1E6; }
}
@media (max-width: 576px) {
    .nav-tabs-sm-vertical { display: block; border-bottom: none; }
    .nav-tabs-sm-vertical .nav-item { margin-left: 0; border-bottom: 2px solid #DDE1E6; }
}