Did you know that flashing content can cause seizures? It's important that digital content doesn't contain any components that flash more than three times in one second. Components that flash in that way can trigger headaches or even seizures. Ensure that any content you create follows this guideline. It's best not to have flashing content but if it is required, it needs to flash 3 or less times per second.
Relates to: WCAG 2.3 - Seizures and Physical Reactions