<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
 <head>
  <title>NEGATED :checked pseudo-class</title>
  <style type="text/css"><![CDATA[input, span { background-color : red }
input:not(:checked), input:not(:checked) + span { background-color : lime}]]></style>
  <link rel="author" title="Daniel Glazman" href="http://glazman.org/"/>
  <link rel="author" title="Ian Hickson" href="mailto:ian@hixie.ch"/>
  <link rel="help" href="https://www.w3.org/TR/css3-selectors/#selectors"/> <!-- bogus link to make sure it gets found -->
 </head>
 <body>
<p>
<input type="checkbox"></input> <span>Everything in this paragraph should have a green background</span></p>
</body>
</html>