[css-pseudo-4] Root inline fragment is inside ::first-line w3c#1384

Author: fantasai

css-pseudo-4/Overview.bs

@@ -149,6 +149,9 @@ Finding the First Formatted Line</h4>
   When a [=first formatted line=] is represented
   by multiple ''::first-line'' pseudo-elements,
   they are nested in the same order as their [=originating elements=].
+  The [=inline-level=] contents of this line--
+  including its [=root inline box=] fragment--
+  are nested within the innermost ''::first-line'' [=pseudo-element=].
 
   <div class="example">
     Consider the following markup:
@@ -197,15 +200,10 @@ Styling the ''::first-line'' Pseudo-element</h4>
     <li>'text-orientation'
   </ul>
 
-  Setting 'line-height' on ''::first-line'' affects
+  Note: Setting 'line-height' on ''::first-line'' inherits to
   the fragment of the [=root inline box=]
   that wraps the contents of the first line,
   and therefore can both increase and decrease the height of the first line box.
-  <!-- Issue 2282 -->
-
-  ISSUE(2282): Is this because it wraps the root fragment,
-  or because it <em>is</em> the root fragment?
-  Is there any other case in which this matters?
 
 <h4 id="first-line-inheritance">
 Inheritance and the ''::first-line'' Pseudo-element</h4>