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ARIA roles used must conform to valid values

Values assigned to ARIA role values must be valid. Role values must be spelled correctly, correspond to existing ARIA role values, and must not be abstract roles to correctly expose the purpose of the element.

Elements assigned invalid ARIA role values are not interpreted by assistive technology as intended by the developer.

When screen readers and other assistive technologies do not know the role of each element on the web page, they are not able to interact with it intelligently, nor are they able to communicate the role to the user. An element's features, properties, and methods of conveying information to and/or from the user can be communicated via assistive technologies when a role value is invalid.

Learn more about this accessibility rule at Deque University >>

Other WCAG: 4.1.2 accessibility rules checked by Rocket Validator