It's a good beginning even if there are already some good alternatives out there as well. Wishing to see how you solve the problems of layouts and nested layou

It's a good beginning even if there are already some good alternatives out there as well. Wishing to see how you solve the problems of layouts and nested layouts (including transitions in between). I really hope you can simplify the current state of the art, because, at least for me personally UI programming is a pain (too many options and abstractions I do not know).