To HTML Content Category Flow

Html elements keygen, base, and audio

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, base element Specifies a base URL for all of the relative URLs in the document to use, audio element The audio element is used to embed sound content in an HTML or XHTML document. These elements allows child elements from interactive, embedded, heading, sectioning, phrasing, and metadata content categories.

Restore previous example

keygen keygen and base, keygen, base, and audio

Advanced example

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

You cannot advance example level further.

HTML element example

Result from the Online TryIt-Editor
chrome 3.0safari 1.2Firefox 3.6ie N/Aopera 10.5