diff --git a/source/ContentScript/index.js b/source/ContentScript/index.js
index 05f7d18..214ca4a 100644
--- a/source/ContentScript/index.js
+++ b/source/ContentScript/index.js
@@ -1,3 +1,3 @@
-document.body.style.filter = 'invert(1)';
+console.log('helloworld from content script');
 
 export {};