diff --git a/collects/scribble/scribble.css b/collects/scribble/scribble.css
index f2c9ff81dd..c610d0dcd5 100644
--- a/collects/scribble/scribble.css
+++ b/collects/scribble/scribble.css
@@ -326,6 +326,7 @@ i {
 
 .SubFlow {
   display: block;
+  margin: 0em;
 }
 
 .boxed {