Accessibility

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A feed is a section where content is added based on the scroll position.

The scrolling container has role="feed" and an aria-label or aria-labelledby
The feed element has aria-busy=true when elements are being added or removed, and aria-busy=false when the feed is stable
Individual items are article elements with an aria-label or aria-labelledby
Each article has aria-posinset and aria-setsize to indicate the position in the feed