If you are able to observe what is severely lacking in this implementation, I am pretty sure that the Github author would welcome your suggestions / comments / PRs and any contribution to make this better.
For a start, this is actually good (enough).
In the same vein that TailwindUI is still continuing to evolve as the maintainers are finding optimization to make it better.
I'm not saying that's necessarily the case here, but there is a strong argument in favor of not making the default theme for a UI library look perfect.
Sounds like native GUI experience on Mac or Windows for quite some time, then? I'm certainly not offended when all buttons look the same. At least I immediately know that they're buttons.
Not to make a value judgement on ebooks, but I just really like physical books sometimes - if it was on Amazon I likely would have bought it.
Again, not a value judgement on the content - I'm sure it's great (I'm a paid and happy user of TailwindUI)
A lot of the products I see turning up on Show HN would look infinitely better if they used this library. (The ones where UI design is clearly not the solo-developer's strength).
I mean. This looks alright and it will certainly make any UI look pretty decent, but the execution is not superb like the actual TailwindUI library which is incredibly well thought from a visual design perspective. Those components are perhaps less shiny than these but they are incredibly functional and way more intentional.
This is a good effort though and I hope to see it improving.