How to change the background color of the active tab items in a tab group?

Seems I can’t find any place where or how to change the default background color of a tab group.

I want to change the framed white color, and of course for all tabs when they are active:

Found it, a bit of CSS helps:

.nav-tabs .nav-link:hover {
  background-color: var(--bs-light);
  border-color: var(--bs-light);

.nav-tabs {
  background-color: var(--bs-link-color);
  border-color: var(--bs-link-color);