Change sticky to 'top: 33px;', remove 'qfq-sticky-element'

less/qfq-bs.css.less

@@ -843,6 +843,12 @@ legend {
   }
 }
 
+.qfq-sticky {
+  position: -webkit-sticky; /* Safari */
+  position: sticky;
+  top: 0;
+}
+
 thead.qfq-sticky th, thead.qfq-sticky td {
   position: -webkit-sticky; /* Safari */
   position: sticky;
@@ -852,15 +858,11 @@ thead.qfq-sticky th, thead.qfq-sticky td {
 }
 
 thead.qfq-sticky td {
-  top: 49px;
+  top: 33px;
 }
 
 .dropdown-menu {
-  z-index: 1060;
+  z-index: 920;
 }
 
-.qfq-sticky-element {
-  position: -webkit-sticky; /* Safari */
-  position: sticky;
-  top: 0;
-}
+