details element The HTML details element (<details>) is used as a disclosure widget from which the user the retrieve additional information, base element Specifies a base URL for all of the relative URLs in the document to use, dfn element Specifies that the enclosed text defines a term. These elements allows child elements from interactive, embedded, heading, sectioning, phrasing, and metadata content categories.
Click the html element name in the punctuation list to advance the example in 'Tryit-Editor':