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The <aside> element represents a section of a page that consists of content that is tangentially related to the content around the aside element, and which could be considered separate from that content.


  • Example of contents
    • pull quotes
    • sidebars
    • advertising
    • groups of nav elements

etc. Other content that is considered separate from the main content of the page. [Example A]

HTML Attributes

See global attributes.


Example A

The following example shows how an aside is used to mark up background material on Switzerland in a much longer news story on Europe [try it]:

 <p>Switzerland, a land-locked country in the middle of geographic Europe,
 has not joined the geopolitical European Union,
 though it is a signatory to a number of European treaties.</p>

HTML Reference

The HTML5 specification defines the <aside> element in 4.4.5 The aside element.