W3C home > Mailing lists > Public > www-style@w3.org > November 2011

Re: New ::first-page pseudo-element

From: Håkon Wium Lie <howcome@opera.com>
Date: Thu, 3 Nov 2011 05:25:57 +0100
Message-ID: <20146.6101.233100.552974@gargle.gargle.HOWL>
To: robert@ocallahan.org
Cc: H??kon Wium Lie <howcome@opera.com>, David Hyatt <hyatt@apple.com>, Michael Day <mikeday@yeslogic.com>, "www-style@w3.org" <www-style@w3.org>
Robert O'Callahan wrote:

 > Another issue: currently the columns spec says "All column boxes in a
 > multi-column element are in the same stacking context and the drawing order
 > of their contents is as specified in CSS 2.1." If you can style columns
 > individually then I assume that would no longer be the case. Regions
 > probably breaks that too.

Yes. If you turn columns in to positioned regions, you'd expect
z-index to work, too.

 > That means if you have an element that creates a stacking context (either
 > explicitly, using z-index, or implicitly, using opacity or filter etc), and
 > it breaks across columns (or regions), and the columns (or regions) aren't
 > adjacent in z-order ... we have a problem.

Can't we just consider the various parts of the element to behave as
separate elements?

A related issue: It's still not clear to me how elements inside
regions inherit. Say, you set this on a region:

  font-size: 20px;

and inside the region, a div with this rule appears:

  font-size: 1.2em

What is the 1.2em computed wrt.? The structural parent or the region?

              Håkon Wium Lie                          CTO °þe®ª
howcome@opera.com                  http://people.opera.com/howcome
Received on Thursday, 3 November 2011 04:29:23 UTC

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