<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN"> <html> <head> <title>Negation pseudo-class cannot be an argument of itself</title> <style type="text/css">p { background-color : lime } p:not(:not(p)) { background-color : red }</style> <link rel="first" href="css3-modsel-1.html" title="Groups of selectors"> <link rel="prev" href="css3-modsel-82b.html" title="NEGATED :only-of-type pseudo-class"> <link rel="next" href="css3-modsel-84.html" title=":contains() pseudo-class"> <link rel="last" href="css3-modsel-d5e.html" title="NEGATED :indeterminate with :checked"> <link rel="up" href="./index.html"> <link rel="top" href="../../index.html"> </head> <body> <p>This paragraph should have a green background</p> </body> </html>