diff --git a/less/plugins/adapt-contrib-slider/slider.less b/less/plugins/adapt-contrib-slider/slider.less
index cc86f050..a95864d8 100644
--- a/less/plugins/adapt-contrib-slider/slider.less
+++ b/less/plugins/adapt-contrib-slider/slider.less
@@ -26,13 +26,11 @@
   &__number-selection {
     background-color: @item-color;
     color: @item-color-inverted;
-    z-index: 5;
   }
 
   &__number-model-answer {
     background-color: @item-color;
     color: @item-color-inverted;
-    z-index: 10;
   }
 
   // Scale