Html elements span, keygen, and sup

span element Span element used to surround content blocks for formatting, keygen element The HTML keygen element exists to facilitate generation of key material, and submission of the public key as part of an HTML form, sup element Specifies that the enclosed text should be rendered in the browser as superscript. These elements allows child elements from interactive, embedded, heading, sectioning, phrasing, and metadata content categories.

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span span and keygen, span, keygen, and sup

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