Allow for moving content to be paused, stopped, or turned off
Make sure that any moving, scrolling, or flashing content that starts automatically and lasts longer than 5 seconds can be paused, stopped, or turned off. This includes carousels, on-page animations, moving ads, etc. It may distract visitors with cognitive impairments. This can also be distracting for visitors who use a screen reader.
These rules also apply to all auto-refreshing content, where it is also crucial that the frequency of the updates can be adjusted.