Age calc. using vite react app and tailwind css

Making the error message work on their own was super complicated, it would have been so much easier to catch an error globally and tell it but of course, its way smarter this way. I wonder if there were ways to make it clearer and simpler than I did, in fact, im sure there are ways, I'd like to know which. I also wondered how to space the label letters, I didnt try hard enough.

I went with using global durations of months and years, i wonder if there is a more 'calendar' way of doing it.