diff --git a/userContent.css b/userContent.css
index 4851577130d135a1f0962ae719e50fa99dffd324..8ed5d6b4838b646bc9eefe6ef838a31aad039306 100644
--- a/userContent.css
+++ b/userContent.css
@@ -8,6 +8,10 @@
     body{ font-weight: 400 !important; /* font-weight 300 makes the text really hard to read */ }
 }
 
+@-moz-document domain(backend.univie.ac.at) {
+    body{ font-weight: 400 !important; /* font-weight 300 makes the text really hard to read */ }
+}
+
 @-moz-document domain(old-phaidra.univie.ac.at) {
     body{ font-weight: 400 !important; /* font-weight 300 makes the text really hard to read */ }
     #wrapper{