2.4 Navigable · Operable
WCAG 2.4.3 Focus Order
Level A
When users navigate sequentially, focus must move through interactive elements in an order that preserves meaning and operability.
Common failures
- `tabindex` values above 0 reorder focus unpredictably.
- Modals appear visually but focus stays on the page behind.
How to fix
- Avoid positive `tabindex` values; rely on DOM order.
- Move focus into modals on open and restore on close.
Related criteria
- WCAG 1.3.2 Meaningful Sequence Level A
- WCAG 2.1.1 Keyboard Level A
- WCAG 2.4.7 Focus Visible Level AA