Syntax and parsing of new pseudo-elementsIan HicksonCSS 3 Module W3C Selectors Next Syntax and parsing of unknown pseudo-classes Previous Syntax and parsing Test # 250 of 296 Testing Syntax and parsing of new pseudo-elements ID 159 Date 2001-11-20 Revision 1.0 User interaction is required for this test.
Try selecting some text in this document. It should be have a green background.
::selection { background: lime; }
:selection { background: red; }
<p xmlns="http://www.w3.org/1999/xhtml">Try selecting some text in this document. It should be have a green background.</p>