diff --git a/src/util/lang.ts b/src/util/lang.ts
index 282d9fe..5e39aa2 100644
--- a/src/util/lang.ts
+++ b/src/util/lang.ts
@@ -1,9 +1 @@
-export function classNames(
-  displayClass?: "mobile-only" | "desktop-only",
-  ...classes: string[]
-): string {
-  if (displayClass) {
-    classes.push(displayClass);
-  }
-  return classes.join(" ");
-}
+export { classNames } from "@quartz-community/utils/lang";