To HTML Content Category Interactive

Html elements video, h3, and kbd

video element The HTML  <video> element is used to embed video content in an HTML or XHTML document, h3 element Heading Level 3, kbd element Specifies that the enclosed text should be formatted as keyboard input. 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 kbd

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