[css-background] Drop border-radius on collapsed-borders tables.

Author: fantasai

css-backgrounds/Overview.html

@@ -3112,27 +3112,11 @@ <h3 id=border-radius-tables><span class=secno>5.6. </span>Effect on Tables</h3>
 
   <p>The ‘<a href="#border-radius"><code
    class=property>border-radius</code></a>’ properties do apply to ‘<code
-   class=css>table</code>’ and ‘<code class=css>inline-table</code>’
-   elements. When ‘<code class=property>border-collapse</code>’ is
-   ‘<code class=css>collapse</code>’, the UA may apply the border-radius
-   properties to ‘<code class=css>table</code>’ and ‘<code
-   class=css>inline-table</code>’ elements, but is not required to. In this
-   case not only must the border radii of adjacent corners not intersect, but
-   the horizontal and vertical radii of a single corner must not extend past
-   the far border edges of the cell at that corner (i.e. a table corner's
-   border-radius does not affect cells not at that corner). If the computed
-   values of the border radii would cause this effect, then the used values
-   of all the border radii of the table must be reduced by the same factor so
-   that the radii neither intersect nor extend past the border edges of their
-   respective corner cells.
-
-  <p>The effect of border-radius on <a
-   href="https://www.w3.org/TR/CSS21/tables.html#tables-intro">internal table
-   elements</a> is undefined in CSS3 Backgrounds and Borders, but may be
-   defined in a future specification. CSS3 UAs <em>should</em> ignore
-   border-radius properties applied to internal table elements when ‘<code
+   class=css>table</code>’, ‘<code class=css>inline-table</code>’, and
+   ‘<code class=css>table-cell</code>’ boxes in separated borders mode
+   (‘<code class=css>border-collapse: separate</code>’). When ‘<code
    class=property>border-collapse</code>’ is ‘<code
-   class=css>collapse</code>’.
+   class=css>collapse</code>’, they have no effect.
 
   <h2 id=border-images><span class=secno>6. </span>Border Images</h2>
 
@@ -4513,6 +4497,9 @@ <h3 id=changes-2014-09><span class=secno>9.1. </span> Changes since the 9
     class=property>background-color</code></a>’></var> component of
     <var>&lt;final-bg-layer></var> to the front for serialization because
     some authors seem to expect this even though it makes less sense?
+
+   <li>Dropped effect of ‘<a href="#border-radius"><code
+    class=property>border-radius</code></a>’ from collapsed-borders tables.
   </ul>
 
   <h3 id=changes-2014-02><span class=secno>9.2. </span> Changes since the 4

css-backgrounds/Overview.src.html

@@ -2216,23 +2216,10 @@ <h3 id="corner-overlap">Overlapping Curves</h3>
 
 <h3 id="border-radius-tables">Effect on Tables</h3>
 
-<p>The 'border-radius' properties do apply to ''table'' and ''inline-table''
-elements. When 'border-collapse' is ''collapse'', the UA may apply the
-border-radius properties to ''table'' and ''inline-table'' elements, but
-is not required to. In this case not only must the border radii of adjacent
-corners not intersect, but the horizontal and vertical radii of a single
-corner must not extend past the far border edges of the cell at that
-corner (i.e. a table corner's border-radius does not affect cells not
-at that corner). If the computed values of the border radii would cause
-this effect, then the used values of all the border radii of the table
-must be reduced by the same factor so that the radii neither intersect
-nor extend past the border edges of their respective corner cells.
-
-<p>The effect of border-radius on <a href="https://www.w3.org/TR/CSS21/tables.html#tables-intro">internal
-table elements</a> is undefined in CSS3 Backgrounds and Borders, but may
-be defined in a future specification. CSS3 UAs <em>should</em> ignore
-border-radius properties applied to internal table elements when
-'border-collapse' is ''collapse''.
+<p>The 'border-radius' properties do apply to
+''table'', ''inline-table'', and ''table-cell'' boxes
+in separated borders mode (''border-collapse: separate'').
+When 'border-collapse' is ''collapse'', they have no effect.
 
 <h2 id="border-images">Border Images</h2>
 
@@ -3266,6 +3253,7 @@ <h3 id="changes-2014-09">
   (Apparently this was obvious enough that nobody noticed it was missing until now.)
   <li>Moved <var>&lt;'background-color'></var> component of <var>&lt;final-bg-layer></var> to the front for serialization
   because some authors seem to expect this even though it makes less sense?
+  <li>Dropped effect of 'border-radius' from collapsed-borders tables.
 </ul>
 
 <h3 id="changes-2014-02">