Html elements output, kbd, and hgroup

output element The output (<output>) element represents the result of a calculation, kbd element Specifies that the enclosed text should be formatted as keyboard input, hgroup element The HTML Headings Group Element (<hgroup>) represents the heading of a section. These elements allows child elements from interactive, embedded, heading, sectioning, phrasing, and metadata content categories.

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output output and kbd, output, kbd, and hgroup

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