Address error in prose that forbids standa-alone pseudo-elements as selectors <http://lists.w3.org/Archives/Public/www-style/2009Mar/0195.html>

Author: fantasai

selectors3/Overview.html

@@ -832,7 +832,8 @@ <h3><a name=universal-selector>6.2. Universal selector</a> </h3>
 Namespaces</a> below.</p>
 
 <p>If the universal selector is not the only component of a sequence
-of simple selectors, the <code>*</code> may be omitted.</p>
+of simple selectors or is immediately followed by a pseudo-element,
+the <code>*</code> may be omitted.</p>
 
 <div class="example">
  <p>Examples:</p>