CSS 3 Module <== Test # ==>
W3C Selectors 100 of 296
Testing Date Revision
NEGATED :root pseudo-class (ID #72b) 2001-11-27 1.0

This paragraph should have a green background and there should be no red anywhere.

html:not(:root), test:not(:root) { background-color: red; }
p { background-color: lime; }
 <div>
  <p>This paragraph should have a green background and there should be no red anywhere.</p>
 </div>