level: AAA
Level AAA is the highest level of compliance, making the most accommodations for the broadest range of people. It’s hard to achieve due to the number of rules and sometimes conflicting requirements. Successfully implement every success criterion under Level AAA, AA, and A to achieve this standard.
2.2.3 No Timing
Unless it’s a live broadcast or something else that’s happening in real time, there are no time constraints placed on the user.
2.2.4 Interruptions
Pop-ups, notifications, and other interruptions can be switched off.
2.2.5 Re-authenticating
If a logged-in session expires mid-way through a task, any data entered after expiry is kept, so that they don’t have to re-enter it when they log in again.
2.2.6 Timeouts
A warning is shown if a logged-in session is about to expire.
2.3.2 Three Flashes
Flashing content must never exceed three flashes per second, without exceptions.
2.3.3 Animation from Interactions
Animations triggered by interactions like button presses can be turned off.
2.4.10 Section Headings
Headings are used to group distinct sections on a page.
2.4.12 Focus Not Obscured (Enhanced)
The keyboard focus is fully visible at all times.
2.4.13 Focus Appearance
Focus indicators are at least 2px thick and have a 3:1 contrast ratio against adjacent colors.
2.4.8 Location
The user is clearly informed where they are in a set of pages.
