diff --git a/templates/repo/widget/inline-diff.cassius b/templates/repo/widget/inline-diff.cassius
index 03a0407..43a3e65 100644
--- a/templates/repo/widget/inline-diff.cassius
+++ b/templates/repo/widget/inline-diff.cassius
@@ -13,6 +13,9 @@
  * <http://creativecommons.org/publicdomain/zero/1.0/>.
  */
 
+pre
+    margin: 0px
+
 .lines
     font-family: monospace