I was a big fan back in the day, but I really don’t want to use jQuery anymore. I now use Bulma because it’s one of the better ones not to force a JavaScript framework on you. You can make it as complex (or as simple) as you like.
We do. We considered Bulma but when you look at the comparison it is not a strong incentive to switch just for the sake of it. Also IE11, for the time being.