diff --git a/less/common/root.less b/less/common/root.less
index 3df86817df..9160c7db28 100644
--- a/less/common/root.less
+++ b/less/common/root.less
@@ -11,6 +11,13 @@
   // available to the JS code.
   --flarum-screen: none;
 
+  --screen-phone-max:   @screen-phone-max;
+  --screen-tablet:      @screen-tablet;
+  --screen-tablet-max:  @screen-tablet-max;
+  --screen-desktop:     @screen-desktop;
+  --screen-desktop-max: @screen-desktop-max;
+  --screen-desktop-hd:  @screen-desktop-hd;
+
   @media @phone { --flarum-screen: phone; }
   @media @tablet { --flarum-screen: tablet; }
   @media @desktop { --flarum-screen: desktop; }