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Web Accessibility Policy of the State of Maine

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Implementation Guidelines

8. Animation

8.1 - Avoid flickering, blinking, and unnecessary animation.

What:
Animated graphics, Flash, Java, <blink> tags, <marquee> tags, and other techniques are often used to create a variety of animated effects.

Why:
Flickering or blinking between 2 and 55 Hz (flashes per second) can trigger epileptic seizures. Animation can be distracting to users with certain visual or cognitive disabilities.

How:
Do not cause elements to blink regularly between 2 and 55 Hz. Avoid animation and movement unless it provides significant additional information.

Ref: WCAG 7.1, 7.2, 7.3; 508 j