To HTML Content Category Interactive

Html elements iframe, cite, and video

iframe element Defines an inline frame (ie a frame embedded in a document), cite element Specifies that the enclosed text is a citation from another source, video element The HTML  <video> element is used to embed video content in an HTML or XHTML document. These elements allows child elements from interactive, embedded, heading, sectioning, phrasing, and metadata content categories.

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iframe iframe and cite, iframe, cite, and video

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