[css-pseudo-4] Allow overlay on inline-level boxes to cover its portion of the line box. #5395

Author: fantasai

css-pseudo-4/Overview.bs

@@ -565,6 +565,9 @@ Area of a Highlight</h3>
     <li>
       The overlay may also include other other areas within the border-box of an element;
       in this case, those areas belong to the innermost such element that contains the area.
+    <li>
+      For an [=inline-level box=], the overlay may extend outside its border edges
+      in the [=block axis=] as far as the edges of its [=line box=].
   </ul>
 
   Issue: See
@@ -970,6 +973,8 @@ Changes</h2>
     <li>Added 'ruby-position' to properties allowed on ''::first-line'',
     analogous with 'text-emphasis-position'.
     (<a href="https://github.com/w3c/csswg-drafts/issues/2998">Issue 2998</a>)
+    <li>Allowed highlight overlay of inline-level boxes to extend to the line box edges.
+    (<a href="https://github.com/w3c/csswg-drafts/issues/5395">Issue 5395</a>)
   </ul>
 
   Changes since the <a href="https://www.w3.org/TR/2016/WD-css-pseudo-4-20160607/">7 June 2016 Working Draft</a> include: