↪ Replying to @unknown
@Science_glamour In this case it was not the use of gifs per se that I reacted most strongly to, but the joking and laughing about a neurological disorder. That said, there are people who are vulnerable to to photo-sensitive seizures. For example: telegraph.co.uk/technology/201…
@Science_glamour Generally, it is the pace of flashing animation that will pose dangers. Accessibility guidelines talk about not flashing anything more than 3 times per second. Color often matters as well, red being the worst cuprit. Here's a good walkthrough: developer.mozilla.org/en-US/docs/Web…