diff --git a/install-usercss/install-usercss.css b/install-usercss/install-usercss.css
index 5e43c8f5..6b5d2466 100644
--- a/install-usercss/install-usercss.css
+++ b/install-usercss/install-usercss.css
@@ -462,7 +462,7 @@ label {
     padding: 0;
   }
   .main {
-  	flex: 1;
+    flex: 1;
   }
   #header-content-wrapper {
     display: flex;