To HTML Content Category Interactive

Html elements video, h3, and command

video element The HTML  <video> element is used to embed video content in an HTML or XHTML document, h3 element Heading Level 3, command element The command element represents a command which the user can invoke. These elements allows child elements from interactive, embedded, heading, sectioning, phrasing, and metadata content categories.

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video video and h3, video, h3, and command

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