2.1.73 [CSS-Level2-2009] Section 12.1, The :before and :after pseudo-elements

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V0105:

The specification states: 

 The :before and :after pseudo-elements specify the location of content before and 
 after an element's document tree content.

Quirks Mode and IE7 Mode (All Versions)

The :before and :after pseudo-elements are not supported.