One is not providing reasonably prominent, meaningful visual indicators of the availability of a text transcript for audio-visual content. Another instance could arise from failing to provide captions or transcripts for video content containing audio. Finally, and less often, one can violate the ADA by not designing websites so they can be navigated with Assistive Technology (i.e., screen readers).
Website making it difficult for the screen reader to detect website content
Websites that do not provide a logical navigation system for screen reader users.
Websites that doesn't provide captions, transcripts, and/or audio descriptions of multimedia content such as videos.
Websites that does not allow preferences of color scheme, text size, or contrast sensitivity for users with photosensitive epilepsy.