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Re: WCAG SC 1.4.10 (Reflow) and sticky headers

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From: Patrick H. Lauke
Date: Feb 24, 2020 1:37AM

On 24/02/2020 07:55, Steve Green wrote:
> I am testing WCAG SC 1.4.10 (Reflow) on a website that has a sticky header. The content reflows ok in terms of the width, but at 400% zoom and 1280px width the content is truncated at window heights below 780px. The cut-off content cannot be accessed because sticky headers cannot be scrolled.
>
> This is obviously an accessibility issue, but it does not appear to violate any WCAG success criteria. SC 1.4.10 makes no mention of window height except in the context of pages that are designed to scroll horizontally, which is not the case here.
>
> Have I missed something, or is this an apparent oversight in the success criterion?

My interpretation is that it still fails the "Content can be presented
without loss of information or functionality" part of the SC. You have
vertical-scrolling content, you changed the viewport to be 320 CSS px
wide, and you lost content. That first sentence doesn't necessarily mean
"No loss of content/functionality horizontally", but is general.

P
--
Patrick H. Lauke

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