principle: Robust
Make sure that assistive technology can navigate and interact with the same content and components. Does the content work across browsers, devices, and assistive technology?
WCAG 2.0, 2.1
Level A
4.1.1 Parsing
The markup has been validated and there are no errors, such as duplicate ids, missing tags, and invalid child elements.
WCAG 2.0, 2.1, 2.2
Level A
4.1.2 Name, Role, Value
The semantic meaning of every interactive element (form controls, links, headings, landmarks, tables, and so on) is correct, and each has an accessible name.
WCAG 2.0, 2.1, 2.2
Level AA
4.1.3 Status Messages
Messages like form errors and success pop-ups are communicated to assistive technology like screen readers.
