Merge pull request #44 from johanneswilm/master

[css-page-floats] simplify page float placement: first place those that float in pages, then columns and regions

Author: johanneswilm

css-page-floats/Overview.bs

@@ -797,19 +797,14 @@ img {
   The order of page float placement is determined by the following rules:
 
   <ol>
-  <li>
-    A page float is placed before any page floats with a <a>float reference</a>
-    that is a descendant of its <a>float reference</a>.
-  </li>
-  <li>
-    Page floats with the same <a>float reference</a> are placed in the order they
-    appear in the DOM.
-  </li>
-  <li>
-    Page floats whose float references are not descendants of one-another and
-    that do not have the same <a>float reference</a> are placed in the order
-    they appear in the DOM.
-  </li>
+    <li>
+      All page floats with 'float-reference' set to `page` are placed, in the
+      order they appear in the DOM, before those with 'float-reference' set to
+      `region` and `column`.
+    <li>
+      Thereafter, page floats with 'float-reference' set to `column` and `region`
+      are placed in the order they appear in the DOM.
+    </li>
   </ol>
 
   The placement of a single page float is a process that has to be terminated