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Re: F3: Failure of Success Criterion 1.1.1 due to using CSS

From: Neil King <Neil.King@visionaustralia.org>
Date: Sat, 18 Aug 2012 05:47:25 +1000
To: Jan Eric Hellbusch <hellbusch@2bweb.de>
CC: "w3c-wai-ig@w3.org" <w3c-wai-ig@w3.org>
Message-ID: <D68C9F4A-3413-4E44-85AC-17B17343BA70@visionaustralia.org>
Hi Jan

Many thanks. I certainly agree that there is an issue aside from the contrast one with using CSS. We have always provided solutions for screen readers; alt for CSS as a last resort to providing images in HTML.

However, we have not a sufficient alternative solution to CSS sprites and high contrast mode... Yet

All the best
Neil

---
Neil King
National Manager Accessibility Consulting
P: 02 9334 3547
E: neil.king@visionaustralia.org


On 18/08/2012, at 5:14, "Jan Eric Hellbusch" <hellbusch@2bweb.de> wrote:

Neil,

> Does anyone know of an easy way around this for complex and large websites
> that are not planning a redesign? Steve provided some great insights in
his article
> 'High Contrast Proof CSS Sprites' via the before: pseudo element
>
(http://www.paciellogroup.com/blog/2010/01/high-contrast-proof-css-sprites/
> <http://www.paciellogroup.com/blog/2010/01/high-contrast-proof-css-
> sprites/> ). Anyone have any advances on this or similar solutions they
> recommend?

You will find some basic solutions here:

* Links:
http://www.barrierefreies-webdesign.de/knowhow/symbole/download/css-sprites-
mit-links-und-content.zip
* Buttons:
http://www.barrierefreies-webdesign.de/knowhow/symbole/download/css-sprites-
mit-button-und-content.zip

There is a lot to write about icons, CSS sprites and accessibility.
Unfortunately, I can only offer it in German:
http://www.barrierefreies-webdesign.de/knowhow/symbole/

The bottom line is that

* yes, you can get your icons displayed in high contrast mode with CSS
adaptions
* but even if you do, there are still considerations needed to be made for
screenreader usage.

If icons and other images are not purely presentational, then they belong in
HTML with alternate text. And if they are purely presentational, then there
are still some accessibility reasons to keep them in HTML.

As far as your question is concerned: You are referring to 1.1.1 and that is
about alternate text, not high contrast mode. If images require an alternate
text and are thus placed in HTML, then they will be displayed in high
contrast mode as well.

HTH,
Jan



--
Jan Eric Hellbusch
Tel.: +49 (231) 86436760 oder +49 (163) 3369925
Web: http://2bweb.de     Twitter: www.twitter.com/2bweb
--
Das Buch über barrierefreies Webdesign:
"Barrierefreiheit verstehen und umsetzen - Webstandards für ein zugängliches
und nutzbares Internet"
812 Seiten, Dpunkt Verlag (2011)
http://www.barrierefreies-webdesign.de/dpunkt/





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Received on Friday, 17 August 2012 19:48:12 UTC

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