* Update navbar docs to put .active class on .nav-link
Fixes#30652 in v5.
* Remove two selectors from navbar nav that are either unused, or duplicative
Co-authored-by: XhmikosR <xhmikosr@gmail.com>
- Use a semitransparent gradient from light to dark which works on any background-color
- Store the gradient as a custom property (--bs-gradient)
- Remove `.bg-gradient-*` variants in favour of `.bg-gradient` which works even when `$enable-gradients` are enabled
- Add gradients to navbar, active page links and badges when gradients are enabled