All WCAG criteria
WCAG 2.1·Perceivable·1.3 Adaptable

1.3.4 Orientation

Level AA

Content must not be locked to portrait or landscape unless the orientation is essential.

Why it matters

Users with mounted devices (wheelchairs, mobility aids) cannot rotate their screens.

Common failure
@media (orientation: landscape) { body { display: none } }
Accessible version
/* Allow content in any orientation */

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.

Related criteria in 1.3 Adaptable