Keyboard access is so essential to accessibility and usability that a page with content inaccessible by keyboard does not meet the requirements for Level A WCAG 2.1 compliance.
Keyboard traps are especially common in input fields, menus, embedded elements, and CAPTCHAs, and they may also be caused by poor implementation of JavaScript.
Following development best practices and performing thorough, ongoing testing are both essential to preventing and correcting keyboard traps.
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