diff --git a/package.json b/package.json
index e61d2917..671425fa 100644
--- a/package.json
+++ b/package.json
@@ -22,6 +22,9 @@
     "e2e:report": "npx playwright show-report",
     "copy:workers": "node ./scripts/copy-workers.mjs"
   },
+  "sideEffects": [
+    "**/*.css"
+  ],
   "exports": {
     ".": {
       "types": "./dist/index.d.ts",