Selected tabset isn't distinguishable

[AshleyHenry15]

Is your feature request related to a problem? Please describe. A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]

All entries are black/gray. Difficult to tell which is the selected tabset

Describe the solution you'd like A clear and concise description of what you want to happen.

Describe alternatives you've considered A clear and concise description of any alternative solutions or features you've considered.

in theme.scss:

.nav-tabs .nav-link.active,
.nav-tabs .nav-item.show .nav-link {
  color: $posit-blue !important;
  font-weight: 700 !important;
}

Additional context Add any other context or screenshots about the feature request here.