Html elements header, strong, and command

header element The HTML Header Element (<header>) represents a group of introductory or navigational aids, strong element Specifies that the enclosed text should be rendered in the browser as "strong" (usually bold) text, 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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header header and strong, header, strong, and command

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