I always find the criticism of localised styles and so-called separation-of-concerns violations amusing, given that the vast majority of user interface APIs to

I always find the criticism of localised styles and so-called separation-of-concerns violations amusing, given that the vast majority of user interface APIs to have ever existed have you set the styles directly on the elements. I think there’s maybe a few desktop UI APIs that use a similar approach to CSS, but having a separate declarative style sheet is almost unique to the web in the grand scheme of things. I guess it’s mostly people with a document-first mindset to stuff on the web, but I don’t think CSS is a good way to style application UIs.