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[CSSWG][css-box-3] Updated WD of CSS Box Model Module Level 3

From: fantasai <fantasai.lists@inkedblade.net>
Date: Thu, 9 Aug 2018 13:22:54 -0700
To: "www-style@w3.org" <www-style@w3.org>
Message-ID: <2357ce7a-9317-2bb3-cbc4-27690e57005a@inkedblade.net>
The CSS WG has published two back-to-back Working Drafts of the CSS Box Model Module Level 3:


The first publication, https://www.w3.org/TR/2018/WD-css3-box-20180731/
archives Bert and Anton’s changes to that spec since the 2007 draft for
archaeological purposes. (Note: It is still dangerously out-of-date.)

The second publication, https://www.w3.org/TR/2018/WD-css-box-3-20180809/
drops all of the spec content that
   a) discusses box generation; this has been moved to the
      CSS Display Module https://www.w3.org/TR/css-display-3/
   b) discusses the Block Layout model; this will become its own module
      and will be based on the prose in CSS2 (which has been maintained)
      rather than what was in the css3-box specification (which was not)
and the remaining content, which
   c) discusses the box model (margin/padding/border/content areas)
has been synced to CSS2. See https://www.w3.org/TR/css-box-3/#intro

The scope of this module is now just the margin and padding properties.
There are no non-editorial changes since CSS Level 2, other than adapting
the prose slightly to account for vertical writing modes.

This publication also gives us Bikeshed-linkable definitions for some
very common layout terms like “margin box” and “padding edge”. (Yay!)

Note: A future revision of this module might include the border styling
properties (currently defined in css-backgrounds-3); whether or not
to move them is currently open question, thoughts on this idea welcome.

Please review the draft, and send any comments to this mailing list,
<www-style@w3.org>, prefixed with [css-box-3] (as I did on this
message) or (preferably) file them in the GitHub repository at

For the CSS WG,
Received on Thursday, 9 August 2018 20:23:26 UTC

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