Guideline 2.3 Seizures and Physical Reactions

Do not design content in a way that is known to cause seizures or physical reactions.

2.3.1 Three Flashes or Below Threshold

Level A
Web pages do not contain anything that flashes more than three times in any one second period, or the flash is below the general flash and red flash thresholds.

Note: Since any content that does not meet this success criterion can interfere with a user's ability to use the whole page, all content on the Web page (whether it is used to meet other success criteria or not) must meet this success criterion.

2.3.2 Three Flashes

Level AAA
Web pages do not contain anything that flashes more than three times in any one second period.

2.3.3 Animation from Interactions

Level AAA
Motion animation triggered by interaction can be disabled, unless the animation is essential to the functionality or the information being conveyed.
© 2020 Digital Accessibility Implementations Resources. All rights reserved.