Discovery:
Looking at MDN specifications sections for both html
elements and css
properties W3C appear to share the same specification statuses.
Investigation:
Further investigation seems to lead to the same process document for both html
and css
, sub-section 6 (W3C Technical Report Development Process) outline the same recommendation statuses.
Confirmation:
Does W3C share the same recommendation statuses for both html
and css
in their specifications, and if not what are the differences and can official sources be provided?
Since the W3C's HTML Memorandum of Understanding Between W3C and WHATWG there are no W3C HTML Working Drafts. Otherwise, they are the same.