Principle 2 Operable · Guideline 2.4: Navigable
2.4.11 Focus Not Obscured (Minimum)
The focused element must not be entirely hidden.
What this means in practice
New in WCAG 2.2. Sticky headers and cookie banners are the usual offenders: focus moves on, but the element sits behind the bar and cannot be seen.
Normative wording
The binding text lives at the W3C. What you read here is our own faithful rendering – not a quotation.