@patrickbrosset yessssss.

I don't think I have much opinion on syntax.

I think I imagined something like `gap-line: 1px solid grey;` and that it would float within the gap. I don't know who would win between a narrower declared gap than the width of a gap-line 🤔 but maybe the cascade would just fix that for us...

Love it, anyway. Bring it on.