1.1.1 Non-text Content
Images should have descriptive (alt) text.
1.2.1 Audio-only and Video-only (Pre-recorded)
Any audio-only content should also be conveyed in text. Any video content with no audio track should also be described in text, but could also be described with audio.
1.2.2 Captions (Pre-recorded)
The audio in videos should be captioned.
1.2.3 Audio Description or Media Alternative (Pre-recorded)
Actions, descriptions, and other important non-audio content in videos should be described in captions, a separate audio track, or a text-based alternative like a screenplay.
1.2.4 Captions (Live)
Live videos that include audio should be captioned.
2.4.7 Focus Visible
There’s visible keyboard focus styling to indicate which element you’re currently focused on.
2.5.2 Pointer Cancellation
Actions (like pressing a button) aren’t triggered on mouse-down; rather on mouse-up.
2.5.4 Motion Actuation
There is no reliance on device motion, like shaking or tilting, to carry out an action.
3.1.1 Language of Page
There’s a lang attribute on the element that matches the language of the page.
