responsibility: Code
Collection of success criterion where the responsibility falls under technical implementation and developer tasks.
2.4.1 Bypass Blocks
‘Skip links’ are available for keyboard users to jump past navigation.
2.4.3 Focus Order
When a keyboard user tabs through a page, the order goes from top to bottom and left to right, as you would read the page.
2.4.7 Focus Visible
There’s visible keyboard focus styling to indicate which element you’re currently focused on.
2.4.8 Location
The user is clearly informed where they are in a set of pages.
2.4.9 Link Purpose (Link Only)
It is clear where a link will take you from the link text alone, without having to read the text around it.
2.4.11 Focus Not Obscured (Minimum)
The keyboard focus is not completely hidden by other content.
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.
2.5.1 Pointer Gestures
All actions that are carried out using a gesture (swiping, pinching, and so on) or drawing, can also be done with a button or buttons.
2.5.2 Pointer Cancellation
Actions (like pressing a button) aren’t triggered on mouse-down; rather on mouse-up.
