Web Accessibility WCAG 2.1 Knowledge Base

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Conformance Levels

Web Accessibility and WCAG 2.1 is a relatively new area of expertise for many web developers and webmasters. We’re working to build a comprehensive knowledge base of questions and answers to help solve the unique challenges around building websites with web accessibility in mind.  Browse or search our knowledge base, or submit questions to our team of developers.

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What is an audio description?

I've been told that I need to add an audio description to my videos, what does that mean? Will I need to have two different versions of the video?

  • audio
  • audio descriptions
  • prerecorded video
  • video
  • visual media

How Can I Make a Moving Graphic Accessible?

Our director wants to have an eagle (our logo) fly across the page on our web site. This is a terrible idea but I'd like to know what WCAG 2.0, section 508, and/or usability principles this violates. Any other arguments against this will also be...

  • alt tags
  • flashes
  • graphics
  • images
  • wcag

How can I add keyboard only focus styling?

I would like to add focus states for interactive elements on my website, however I don't want the styling I add to apply when clicking on elements. If I just use :focus in my css I see the styles come through when clicking elements, or...

  • CSS
  • focus
  • keyboard