CSS-in-JS: Still Not For Me

I haven't warmed to putting all my styles in JavaScript. When I'm adjusting a layout, I like having the stylesheet open and being able to follow the cascade.

That's a preference, not evidence that everyone else should work the same way. If a project already has a consistent approach, consistency usually matters more than my favourite tools. On a new project, though, I'd still start by asking what plain CSS and a little structure can't do for us.