2.1.59 [CSS-Level2-2009] Section 12.3.2, Inserting quotes with the 'content' property
The specification states:
Quotation marks are inserted in appropriate places in a document with the 'open- quote' and 'close-quote' values of the 'content' property. Each occurrence of 'open-quote' or 'close-quote' is replaced by one of the strings from the value of 'quotes', based on the depth of nesting.
Quirks Mode and IE7 Mode (All Versions)
The quotes property, and the
open-quote and the
close-quote values of the content property are not supported.
All Document Modes (All Versions)
no-close-quote values for the content property incorrectly change the nesting levels of counters.