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Re: [CSS21] 3.2 Conformance: User Preferences

From: Bert Bos <bert@w3.org>
Date: Wed, 24 Aug 2005 20:19:22 +0200
To: www-style@w3.org
Message-Id: <200508242019.23069.bert@w3.org>

On Tuesday 23 August 2005 23:26, Christoph Päper wrote:
> David Woolley:
> > The problem with !important is specificity.  If you make a browser
> > setting equivalent to a single !important rule, the author can
> > override by using a more specific selector than the, presumably, *
> > rule (...)
>
> No, he can't. Specificity comes after importance and origin. At least
> if I not totally misunderstood 6.4.1 Cascading Order.

Correct.

But there may still be things that you cannot express in CSS. E.g., a 
browser may offer minimum contrast, color profiles, different media 
screen/projection), etc.

And anyway, the sentence has a "may" so it doesn't imply any conformance 
requirements. It is more a statement of fact and an explanation of what 
the spec *doesn't* require: it is not forbidden to have such dialogs, 
even if they do the same thing as a user style sheet.

Whether those browser options modify the user style sheet or result in a 
separate configuration is also not specified. The goal is just to 
assure a minimum level of user control over how Web pages are 
displayed. If browsers give even more control, or try make it very 
simple for users, so much the better.



Bert
-- 
  Bert Bos                                ( W 3 C ) http://www.w3.org/
  http://www.w3.org/people/bos                               W3C/ERCIM
  bert@w3.org                             2004 Rt des Lucioles / BP 93
  +33 (0)4 92 38 76 92            06902 Sophia Antipolis Cedex, France
Received on Wednesday, 24 August 2005 18:19:32 GMT

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