[css-lists-3] Cleaned up Marker section

Tab and I spent yesterday doing a major cleanup of the list markers section
in the CSS Lists Level 3 spec:
  https://drafts.csswg.org/css-lists-3/#markers

There's still some significant work to do in the counter section to catch up
to WG resolutions, esp. wrt list-item, but we'd appreciate a review of the
marker section to make sure it's in line with what we want it to say. Once
the counter section is also ready, we'll request a new WD publication. :)

Thanks~
~fantasai

Received on Friday, 5 April 2019 23:48:58 UTC