diff -r 000000000000 -r 6474c204b198 browser/devtools/styleeditor/test/simple.css
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browser/devtools/styleeditor/test/simple.css	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,9 @@
+/* vim: set ts=2 et sw=2 tw=80: */
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+/* ☺ */
+
+body {
+  margin: 0;
+}
+