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Re: [css3-conditional] box-shadow example

From: L. David Baron <dbaron@dbaron.org>
Date: Mon, 3 Jun 2013 17:02:34 +0900
To: Brad Kemper <brad.kemper@gmail.com>
Cc: Simon Sapin <simon.sapin@exyr.org>, www-style list <www-style@w3.org>
Message-ID: <20130603080234.GA28046@crum.dbaron.org>
On Saturday 2013-03-02 00:53 -0800, Brad Kemper wrote:
> On Mar 2, 2013, at 12:00 AM, Simon Sapin <simon.sapin@exyr.org> wrote:
> 
> > Le 02/03/2013 08:34, Brad Kemper a Γ©crit :
> >> In example 7 of "CSS Conditional Rules Module Level 3" [1], it claims
> >> that the @supports is grouping the 'color:white' rule with the
> >> 'box-shadow' rules, because the white text would be invisible if
> >> box-shadow wasn't supported. That would be true of 'text-shadow' (if the
> >> background and everything behind it was white or transparent), but the
> >> box-shadow in the example wouldn't make any difference. It goes around
> >> the outside of the box, and wouldn't be underneath the text normally
> >> (unless we are somehow assuming a negative indent, or a child element
> >> with negative margins or something).
> >> 
> >> 1) http://www.w3.org/TR/css3-conditional/#at-supports
> > 
> > 
> > Proposed fix:
> > 
> > * Change box-shadow to text-shadow in this example, which is apparently what was intended.
> > * Add "(assuming a white background)" after "would cause the text to become invisible". This is the only reason the text would become invisible. Alternatively, add `background: white` to the rule.
> 
> Yeah, that would work. The big list of differently prefixed versions would be a bit silly for 'text-shadow', though. Was that property ever prefixed in a browser?

I don't think it was.

So I continued using box-shadow, but instead made the example make
more sense by using the box-shadow as an alternative to a border:

https://dvcs.w3.org/hg/csswg/rev/a738b83fd597
https://dvcs.w3.org/hg/csswg/rev/9421e8cccd2e

-David

-- 
π„ž   L. David Baron                         http://dbaron.org/   𝄂
𝄒   Mozilla                           http://www.mozilla.org/   𝄂
Received on Monday, 3 June 2013 08:03:09 UTC

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