Negation pseudo-class cannot be an argument of itself

CSS 3 Module	<== Test # ==>
W3C Selectors	109 of 182
Testing	Date	Revision
Negation pseudo-class cannot be an argument of itself (ID #83)	2001-07-11	1.0

This paragraph should have a green background

p { background-color : lime }
p:not(:not(p)) { background-color : red }

<p>This paragraph should have a green background</p>