Html elements header, audio, and base

header element The HTML Header Element (<header>) represents a group of introductory or navigational aids, audio element The audio element is used to embed sound content in an HTML or XHTML document, base element Specifies a base URL for all of the relative URLs in the document to use. These elements allows child elements from interactive, embedded, heading, sectioning, phrasing, and metadata content categories.

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header header and audio, header, audio, and base

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