+/* .page_header + nav.page_subhead now wraps .page_nav and the search form, which is reduced from <form><div class=search> to <form role=search>; and both it and .page_nav are optional; and page_nav comes first rather than last. */
+.page_subhead {
+ display: flex;
+ background: #eee;
+ margin-bottom: 1em;
+}
+