hat supports the main content, yet is separate and meaningful on its own.
* `"contentinfo"`: A region that contains information about the parent page, such as copyrights and links to privacy statements.
* `"form"`: A region of the document that represents a collection of form-associated elements, some of which can represent editable values that can be submitted to a server for processing.
* `"main"`: Main content in a document. In almost all cases a page will have only one `role="main"`.
* `"navigation"`: A