I'm also a seasoned back end developer. It took me 3 years to become a beginner at CSS, and two more to feel like I could finally style an arbitrary front end a

I'm also a seasoned back end developer. It took me 3 years to become a beginner at CSS, and two more to feel like I could finally style an arbitrary front end at an intermediate skill level. This is in comparison to 1 year to master javascript and another year to "get" React top to bottom. CSS was even harder to learn than ansible or clustered mongodb at scale. I suspect it's a neurological difference. I've seen masters of CSS struggle with basic operational computing concepts that feel obvious to back end developers.