Change sticky order (#22027)

Based on this pen: http://codepen.io/zalog/pen/jyoyoR

diff --git a/scss/_variables.scss b/scss/_variables.scss
index b4e8e2fa81050c070fbbd732b01bfaa4020c14ae..09ac11a9dc1b2d14488abe1baf7135620a1ee652 100644 (file)
--- a/scss/_variables.scss
+++ b/scss/_variables.scss
@@ -581,8 +581,8 @@ $dropdown-header-color:          $gray-light !default;
 
 $zindex-dropdown-backdrop:  990 !default;
 $zindex-dropdown:           1000 !default;
+$zindex-sticky:             1020 !default;
 $zindex-fixed:              1030 !default;
-$zindex-sticky:             1030 !default;
 $zindex-modal-backdrop:     1040 !default;
 $zindex-modal:              1050 !default;
 $zindex-popover:            1060 !default;