Html elements output, mark, and strong

output element The output (<output>) element represents the result of a calculation, mark element The HTML Mark Element (<mark>) represents highlighted text, i, strong element Specifies that the enclosed text should be rendered in the browser as "strong" (usually bold) text. These elements allows child elements from interactive, embedded, heading, sectioning, phrasing, and metadata content categories.

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output output and mark, output, mark, and strong

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