To HTML Content Category Interactive

Html elements video, video, and iframe

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

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video video and video, video, video, and iframe

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