app/assets/stylesheets/pageflow/progress_navigation_bar/horizontal.scss in pageflow-progress-navigation-bar-1.4.0 vs app/assets/stylesheets/pageflow/progress_navigation_bar/horizontal.scss in pageflow-progress-navigation-bar-1.5.0

@@ -4,9 +4,10 @@
 .js.progress_navigation_bar.horizontal {
   top: 0;
   left: 0;
   height: 30px;
   width: 100%;
+  z-index: 2;
 
   @include pageflow-progress-mobile-variant {
     height: $progressbar-mobile-width;
     overflow: hidden;