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Re: [css3-transforms] Containing block for abspos

From: Simon Sapin <simon.sapin@exyr.org>
Date: Mon, 25 Mar 2013 12:26:58 +0100
Message-ID: <51503482.7080608@exyr.org>
To: "Tab Atkins Jr." <jackalmage@gmail.com>
CC: www-style <www-style@w3.org>
Le 23/03/2013 22:30, Tab Atkins Jr. a écrit :
> On Sat, Mar 23, 2013 at 12:42 PM, Simon Sapin <simon.sapin@exyr.org> wrote:
>> The spec for the 'transform' property says:
>>> Any value other than ‘none’ for the transform results in the creation
>>> of both a stacking context and a containing block. The object acts as
>>> a containing block for fixed positioned descendants.
>> What about absolutely positioned descendants? Are their containing block
>> still the nearest positioned ancestor, or is it the nearest ancestor that is
>> either positioned or transformed?
> It's a containing block, so yes.

So far I haven’t seen anywhere else in specs "creating a containing 
block" by itself as a concept. Always "Rectangle X is the containing 
block of box Y."

Unless there is an established meaning that I’m not aware of, I think 
that "creating a containing block" is ambiguous if you don’t say 
containing block of what.

> That last line is specifying
> something additional, not limiting the previous clause.

Simon Sapin
Received on Monday, 25 March 2013 11:27:26 UTC

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