"Misuse" of <main> tag

[lat9]

From the definition at w3schools:

The `<main`> tag specifies the main content of a document.

The content inside the `<main>` element should be unique to the document. It should not contain any content that is repeated across documents such as sidebars, navigation links, copyright information, site logos, and search forms.

Since that tag currently is present in the #mainWrapper <div> and encompasses the entirety of the page (header, sideboxes, main content, footer), that makes it very difficult to have a full-wide (e.g. container-fluid) class on the header/footer elements of a page while presenting the sideboxes/main-content in a container (which has a less-than-full screen-width on larger horizontal-width screens).

FWIW, I'm currently considering doing away with the #mainWrapper selector, since its usefulness appears to be minimal, since any overall page styling can be supplied on the body instead.