Impossible rules (:root:first-child, etc)

Impossible rules (:root:first-child, etc) Ian Hickson CSS 3 Module W3C Selectors Next Impossible rules (* html, * :root) Previous :root pseudo-class Test # 32 of 276 of the static tests category Testing Impossible rules (:root:first-child, etc) ID 27a Date 2005-10-19 Revision 1.0

This line should be green (there should be no red on this page).

:root:first-child { background-color: red; } :root:last-child { background-color: red; } :root:only-child { background-color: red; } :root:nth-child(1) { background-color: red; } :root:nth-child(n) { background-color: red; } :root:nth-last-child(1) { background-color: red; } :root:nth-last-child(n) { background-color: red; } :root:first-of-type { background-color: red; } :root:last-of-type { background-color: red; } :root:only-of-type { background-color: red; } :root:nth-of-type(1) { background-color: red; } :root:nth-of-type(n) { background-color: red; } :root:nth-last-of-type(1) { background-color: red; } :root:nth-last-of-type(n) { background-color: red; } p { color: green; } <p xmlns="http://www.w3.org/1999/xhtml">This line should be green (there should be no red on this page).</p>