[css-pseudo-4] Clarify that all properties apply to ::before and ::after the same way they would to a normal element. w3c#1861

Author: fantasai

css-pseudo-4/Overview.bs

@@ -766,7 +766,7 @@ Generated Content Pseudo-elements: ''::before'' and ''::after''</h3>
   When their computed 'content' value is not ''content/none'',
   these pseudo-elements generate boxes
   as if they were immediate children of their <a>originating element</a>,
-  and can be styled exactly like any normal document-sourced element in the document tree.
+  with content as specified by 'content'.
 
   <dl>
     <dt><dfn>::before</dfn>
@@ -778,6 +778,11 @@ Generated Content Pseudo-elements: ''::before'' and ''::after''</h3>
     immediately after the <a>originating element</a>'s actual content.
   </dl>
 
+  These pseudo-elements can be styled
+  exactly like any normal document-sourced element in the document tree;
+  all properties that apply to a normal element
+  likewise apply to ''::before'' and ''::after''.
+
   <div class="example">
     For example, the following rule inserts the string “Note: ”
     before the content of every <code>&lt;p></code> element