faf2d5ae_ors__Part_1___456_Berea_Street_iew_of_CSS_2_1_selector_syntax_Description
[Selector type] The :before and :after pseudo-elements [Pattern] E:before E:after [Description] 
Used to insert generated content before or after an element's content.
CSS 2.1 selectors, Part 1 | 456 Berea Street
Description