diff -r 000000000000 -r 6474c204b198 dom/tests/mochitest/webcomponents/inert_style.css
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dom/tests/mochitest/webcomponents/inert_style.css	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,10 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/* This style is linked in test_shadowroot_inert_link to ensure
+   that link element in ShadowRoot is inert. */
+span {
+  padding-top: 10px;
+}
+