UX: Adjust list and onebox margins (PR #13131)

Lists – made the indent smaller (helps on mobile), added vertical margin Onebox – added top margin

before/after

GitHub

looks good to me but let’s wait on @awesomerobot to merge this.

Looks ok to merge to me!

What’s the markdown for getting into a state where there’s no space below the list? I can’t repro on Meta (I get an empty p tag above/below oneboxes)

Screen Shot 2021-05-25 at 11 40 23 PM

@awesomerobot Just like that, but you need to save it. :sweat_smile: It’s one of unintentional differences between composer preview and actual posts.