Test your knowledge: CSS Scroll Anchoring

Review

1. What problem does scroll anchoring primarily address?

   Scroll anchoring adjusts the scroll position to compensate for movement of a selected anchor node caused by layout changes.
2. Where is an anchor node selected from?

   Anchor selection examines suitable descendants according to visibility, exclusion, priority, and candidate-examination rules.
3. What can happen when a selected anchor moves?

   The specification computes the anchor movement and queues a corresponding scroll adjustment, subject to suppression.
4. What is the purpose of overflow-anchor: none?

   overflow-anchor: none opts the element and relevant descendants out of anchor-node selection.
5. Which feature owns scroll-container formation?

   CSS Overflow defines overflow and scroll-container formation; Scroll Anchoring operates on the resulting scrolling box.
6. Which feature owns snap positions?

   Scroll Snap defines snap positions and re-snapping; anchoring responds to layout changes.
7. How should the current CSS Scroll Anchoring document be described?

   The current CSSWG document identifies itself as an Editor's Draft and says it is work in progress; CSS Snapshot 2026 places the module under rough interoperability.