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[CSS21][css-device-adapt] Multiple groups in the "Media" line of properties/descriptors

From: Simon Sapin <simon.sapin@kozea.fr>
Date: Thu, 28 Feb 2013 13:06:16 +0100
Message-ID: <512F4838.1090507@kozea.fr>
To: "www-style@w3.org" <www-style@w3.org>

Properties and descriptors have a "Media" line described in of 
CSS 2.1:

> This part indicates the media groups to which the property applies.
> Information about media groups is non-normative.

When this line lists multiple groups, it is unclear whether the property 
should apply when the current media is in *any* on the listed group or 
*all* of them.

This happens at least for the 'cursor' property (visual, interactive) 
and for the @viewport descriptors defined in css-device-adapt (visual, 

In both cases "all" makes more sense than "any".
Should we errata CSS 2.1 ?

By the way, css-device-adapt kind of implies in its Introduction that 
the whole spec only applies in continuous media. It would be nice to 
make this more explicit.

Simon Sapin
Received on Thursday, 28 February 2013 12:06:39 UTC

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