Html elements h1, embed, and iframe

h1 element Heading Level 1, embed element Defines an object, such as a multimedia file, embedded in an HTML document, iframe element Defines an inline frame (ie a frame embedded in a document). These elements allows child elements from interactive, embedded, heading, sectioning, phrasing, and metadata content categories.

Restore previous example

h1 h1 and embed, h1, embed, and iframe

Advanced example

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

You cannot advance example level further.