Identify the main content in the document and make sure it is unique.
Engine scans the webpage for multiple elements using
role=main or more than one
<main> which does not have a hidden attribute.
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.
They also provide an easy way for users of assistive technology to skip over blocks of content.