Ultimately, I don't begrudge people for using whatever tool they find best. But I try to avoid Tailwind when given the choice.
Can you share some of those? I don't do much raw CSS so have no idea where it has gaps.
Another is attribute selector support. They have many common ones, but to do anything more complex you need to add support to your configuration. https://tailwindcss.com/docs/hover-focus-and-other-states#at...
I don't want to oversell this; I think Tailwind does a pretty good job covering the "happy path", and if you haven't run into any gaps I wouldn't worry about it too much. But you'll encounter its limits well before you encounter the limits of CSS.
It's an abstraction, but a poor one. It's too low-level to be truly useful, and it's also confusing as some properties doesn't mean the same as in CSS.
You end up with huge unreadable blobs, reminding me of the "write-only" label that Perl once used to have.
And the answer to avoid that unreadable blob is to include CSS, defeating the point.
I prefer CSS/SASS with variables for customization (so you don't have to repeat the blobs) and well-chosen class names (so you can actually read and modify existing code).
I miss some of the already established components from Bootstrap, but whatever. Bootstrap is always kind of a pain in the butt to integrate into a project.