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Re: SC 1.4.4: Failures and Sufficient Techniques

for

From: Patrick H. Lauke
Date: Apr 8, 2019 9:29AM

On 08/04/2019 15:44, Weissenberger, Todd M wrote:
> According to the WCAG documentation, it appears that Page Zoom in common browsers is sufficient to for conformance with WCAG SC 1.4.4 where HTML/CSS documents are concerned. However, it's also understood that some content or function still might break at 200% magnification. > Understanding that conformance and accessibility are not the same
(and taking into account the prevalence of mobile browsing) what's the
current thinking on this? What's your best practice?

Just because full page zoom is now the most common/prevalent
functionality available in browsers, it doesn't mean it's now an
automatic pass of 1.4.4 (your first sentence seems to suggest that's
what you're thinking?)

You still need to test that zooming (and in particular on desktop,
zooming with its potential for reflow/relayout in the browser,
particularly when the browser window itself is relatively small) doesn't
cause any issues.

If content/fuctionality breaks when using full-page magnification up to
200%, then that's a failure of 1.4.4.

Generally, things like sticky headers/footers, absolutely positioned
elements, and elements with overflow:hidden / suppressed scrolling are
the main culprits when it comes to failures of 1.4.4, even with full
page zoom.

P
--
Patrick H. Lauke

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