ame role exist on the same page, people using screen readers, voice control, 
and other ATs will have difficulty identifying or distinguishing between them 
(e.g., where there are two or more `"navigation"` regions).

Landmarks are inserted into the page using the `role` attribute on an element that marks the region. 
The `role` values listed below are the names of the landmark types:
  
* `"banner"`: A region that contains the prime heading or title of a page.
* `"complementary"`: Any section of the page t