Reduce z-index in CSS 'qfq-sticky' class from 9999 to 1000. The 'tablesorter >...

Reduce z-index in CSS 'qfq-sticky' class from 9999 to 1000. The 'tablesorter > columnselector' will be hidden with values > 1060.

less/qfq-bs.css.less

@@ -822,7 +822,7 @@ thead.qfq-sticky th, thead.qfq-sticky td {
   position: sticky;
   top: 0;
   background-color: white;
-  z-index: 9999;
+  z-index: 1000;
 }
 
 thead.qfq-sticky td {