Use ARIA landmarks for main page regions

WCAG recommend using landmark roles for the main regions of a page:

Landmark roles (or "landmarks") programmatically identify sections of a page. Landmarks help assistive technology (AT) users orient themselves to a page and help them navigate easily to various sections of a page.

Source: https://www.w3.org/TR/WCAG20-TECHS/ARIA11.html

Landmark role list:

• banner
• complementary
• contentinfo
• form
• main
• navigation
• region
• search

See also:

• https://developer.mozilla.org/en-US/docs/Web/Accessibility/ARIA/Roles/Region_role
• https://developer.mozilla.org/en-US/docs/Web/Accessibility/ARIA/ARIA_Techniques#landmark_roles