Content supports all orientations

Users who mount phones to wheelchairs or use assistive devices may be locked into one physical orientation and cannot rotate their device. Locking an app to portrait or landscape only permanently excludes these users from the content. WCAG 2.2 SC 1.3.4 (Orientation) is a Level AA requirement: content must not restrict its view to a single display orientation unless it is essential — a piano keyboard app being the canonical example of 'essential.'

Remove any CSS or JavaScript that enforces a single orientation. Responsive layouts should work in both portrait and landscape naturally.

/* Remove orientation lock from CSS */
/* Bad: hides content in landscape */
@media (orientation: landscape) {
  body { display: none; }
}

/* Good: layout adapts to available space */
@media (max-width: 768px) {
  .sidebar { display: none; } /* hides sidebar at narrow widths, not by orientation */
}

Search the codebase for screen.orientation.lock( in JavaScript files and orientation: portrait or orientation: landscape in CSS. Each instance needs a documented justification or removal. Check public/manifest.json for an orientation field set to anything other than any.