HTML main element

The <main> HTML element represents the dominant content of the <body> of a document. The main content area consists of content that is directly related to or expands upon the central topic of a document, or the central functionality of an application.

A document mustn’t have more than one <main> element that doesn’t have the hidden attribute specified.

The content of a <main> element should be unique to the document. Content that is repeated across a set of documents or document sections such as sidebars, navigation links, copyright information, site logos, and search forms shouldn’t be included unless the search form is the main function of the page.