I did both, separated is my way to go. Having both separated makes things easier and cleaner IMHO. You can have a designer to create these seperated layouts, which is pretty cool when you’re a UI/UX designer. The ability to reuse the same code with a different UI layout. And of course generates less conflicts on Git when someone worked on the code while you where on the UI.

I can’t even reconize my country values for the past few months and yet it’s only the beginning for the current government, we still have 4 years to go with Macron. Who knows what ideas they hold for the future.