All WCAG criteria
WCAG 2.1·Operable·2.4 Navigable
2.4.3 Focus Order
Level AWhen navigating with the keyboard, focus must move in a logical order that preserves meaning.
Why it matters
CSS reorder, positive tabindex, or hidden-but-focusable elements break this.
Common failure
<button tabindex="3">Submit</button> <input tabindex="1">
Accessible version
<input> <button>Submit</button>
How OnlyEnable handles this
Source-code fix required. No widget can solve this — it requires changes to your content or markup. Our remediation team can help.