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Re: [css3-regions] issue: is first region initial containing block

From: Anton Prowse <prowse@moonhenge.net>
Date: Fri, 03 Feb 2012 11:20:41 +0100
Message-ID: <4F2BB4F9.5000009@moonhenge.net>
To: www-style@w3.org
CC: Vincent Hardy <vhardy@adobe.com>
 From another thread entitled "[css3-regions] regions forming stacking 
contexts" [http://lists.w3.org/Archives/Public/www-style/2012Feb/0146.html]:

On 03/02/2012 08:07, Vincent Hardy wrote:

> Regarding the initial containing block, I am not sure what is
> missing from the spec. can you clarify? Section 4.1 is explicit:
>
> "The edges of the first region in a region chain associated with a
> named flow establish the rectangle that is the initial containing
> block of the named flow."

I'm assuming that the idea is to override the CSS21 term "initial 
containing block", for content inside of regions.  Your term is actually 
different though: "initial containing block of a named flow".

In examples such as the following from CSS21 10.1:

   # If the element has 'position: absolute', [and the containing block
   # isn't established by other means], the containing block is the
   # initial containing block.

it is not at all clear that your new term overrides the established 
term.  If you want it to do so then you'll need to be more explicit in 
the regions spec.

Cheers,
Anton Prowse
http://dev.moonhenge.net
Received on Friday, 3 February 2012 10:21:09 GMT

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