My project is currently Vuejs which use BootstrapVue components (seems to use bootstrap 4 css).
I am trying to use Tailwind css for new custom components.
Is it po
As long as there's no name collision in 2 libs (which I don't think they are), they will work just fine.
But I don't think you should. Because it will break the unification of the project and will make it harder to maintain.