Html elements iframe, sup, and kbd

iframe element Defines an inline frame (ie a frame embedded in a document), sup element Specifies that the enclosed text should be rendered in the browser as superscript, 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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iframe iframe and sup, iframe, sup, and kbd

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