.nav-tabs {
    @include border-radius($nav-tabs-border-radius);
    margin-bottom: .5rem;
    .nav-link {
      @include border-radius($nav-tabs-border-radius);
      &.active{
        @include box-shadow($box-color-shadow rgba($primary, $box-color-shadow-tint));
      }
    }
}
.nav-pills {
  @include border-radius($nav-pills-border-radius);
  margin-bottom: .5rem;
}

.nav-tunnel {
  padding: $spacer * .25;
  @include box-shadow($box-shadow-inset);
  background: $gray-200;
  .nav-link {
    padding: $spacer * .25 1rem;
  }
}