diff --git a/packages/job/src/job_browser.pp b/packages/job/src/job_browser.pp
index e593efb..e166ec2 100644
--- a/packages/job/src/job_browser.pp
+++ b/packages/job/src/job_browser.pp
@@ -175,6 +175,7 @@ begin
   RegisterGlobalObject(document,'document');
   RegisterGlobalObject(window,'window');
   RegisterGlobalObject(console,'console');
+  RegisterGlobalObject(CSS,'CSS');
   {$IFDEF WORKER}
   RegisterGlobalObject(caches,'caches');
   {$ENDIF}