Html elements dfn, abbr, and base

dfn element Specifies that the enclosed text defines a term, abbr element Specifies that a string is an abbreviation for a longer word or phrase, 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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dfn dfn and abbr, dfn, abbr, and base

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