Html elements sup, iframe, and progress

sup element Specifies that the enclosed text should be rendered in the browser as superscript, iframe element Defines an inline frame (ie a frame embedded in a document), progress element The HTML progress (<progress>) element is used to view the completion progress of a task. These elements allows child elements from interactive, embedded, heading, sectioning, phrasing, and metadata content categories.

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sup sup and iframe, sup, iframe, and progress

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