Html elements iframe, sup, and dfn

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, dfn element Specifies that the enclosed text defines a term. These elements allows child elements from interactive, embedded, heading, sectioning, phrasing, and metadata content categories.

Restore previous example

iframe iframe and sup, iframe, sup, and dfn

Advanced example

Click the html element name in the punctuation list to advance the example in 'Tryit-Editor':

You cannot advance example level further.