I've never used it much, but my guess is that web app developers have moved on to Bootstrap and there's not a lot of them using it anymore, or, as in my case, u

I've never used it much, but my guess is that web app developers have moved on to Bootstrap and there's not a lot of them using it anymore, or, as in my case, using just a few of the features it offers which, in my case, isn't a good use of it.