diff --git a/sass/utilities/mixins.scss b/sass/utilities/mixins.scss
index 3d1a6ecb..9ab51ca5 100644
--- a/sass/utilities/mixins.scss
+++ b/sass/utilities/mixins.scss
@@ -235,16 +235,10 @@
 
 @mixin selection($current-selector: false) {
   @if $current-selector {
-    &::-moz-selection {
-      @content;
-    }
     &::selection {
       @content;
     }
   } @else {
-    ::-moz-selection {
-      @content;
-    }
     ::selection {
       @content;
     }
@@ -422,9 +416,6 @@
 
 @mixin unselectable {
   -webkit-touch-callout: none;
-  -webkit-user-select: none;
-  -moz-user-select: none;
-  -ms-user-select: none;
   user-select: none;
 }