Interesting, I've had the opposite experience. I'd love to develop in native with something like Flutter or React Native, but I find CSS to be much easier and more flexible to use. The base components always /seem/ flexible enough until I want to do something visually complicated like add an animation that blurs an image on hover. I know CSS is horrendous in consistency, but it's piecemeal development has led to it having every UI feature I could really want/need now that I've paid the price and met its learning curve.
For what it’s worth CSS is all I knew prior to Flutter so the learning curve was a bit weird initially but once you start matching concepts you already know like Flutter also has “flexbox” for example it was pretty easy from there. Also having a strongly typed language with great docs is a huge help.
