diff -r 000000000000 -r 6474c204b198 toolkit/themes/osx/help/helpFileLayout.css
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/toolkit/themes/osx/help/helpFileLayout.css	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,157 @@
+/* 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/. */
+
+@import url('chrome://help/content/platformClasses.css');
+
+body,
+td,
+th,
+input {
+  font-family: verdana, sans-serif;
+  font-size: small;
+}
+
+body {
+  margin: 2ex;
+  max-width: 120ex;
+}
+
+:link:hover,
+:visited:hover {
+  color: -moz-activehyperlinktext;
+}
+
+hr {
+  height: 1px;
+  background-color: #000;
+  color: #000;
+  margin: 2em 0;
+}
+
+a[href^="http://"]:after,
+a[href^="https://"]:after {
+  content: url('chrome://help/skin/Weblink.png');
+}
+
+:link {
+  color: #039;
+}
+:visited {
+  color: #636;
+}
+:link:hover,
+:visited:hover {
+  color: #333;
+}
+:link:active,
+:link:active {
+  color: #000;
+}
+
+h1 {
+  font-size: 160%;
+  font-weight: normal;
+}
+h2 {
+  font-size: 150%;
+  font-weight: normal;
+}
+h3 {
+  font-size: 120%;
+}
+h4 {
+  font-size: 100%;
+}
+h5 {
+  font-size: 90%;
+}
+h6 {
+  font-size: 90%;
+  border: 0;
+}
+
+h1,
+h2,
+h3,
+h4,
+h5,
+h6 {
+  margin: 1em 0 .2em;
+  border-bottom: 1px solid #ccc;
+  font-family: arial, verdana, sans-serif;
+}
+
+li h1,
+li h2,
+li h3,
+li h4,
+li h5,
+li h6 {
+  border: none;
+}
+
+
+dt {
+  font-weight: bold;
+}
+
+sup {
+  font-size: 70%;
+}
+
+:link img,
+:visited img {
+  border: 0;
+}
+
+.contentsBox, 
+.contentsBox > ul,
+li {
+  text-indent: 0;
+}
+
+.contentsBox > ul,
+.contentsBox ul > ul {
+  margin: 0;
+  list-style-type: none;
+}
+
+.contentsBox {
+  margin-top: 12px;
+  background-color: #eee;
+  border: 1px solid #ccc;
+  width: 300px;
+  padding: 1em;
+}
+
+.menuPath {
+  background: #c4d0f4; /* bluish color */
+  color: inherit;
+  padding-left:  1px; /* else bgcolor ends at last char - no space */
+  padding-right: 1px;
+}
+
+table {
+  border-collapse: collapse;
+}
+
+td,
+th {
+  border: 1px solid #ddd;
+  padding: 6px;
+  vertical-align: top;
+}
+
+th {
+  background-color: #eee;
+  font-weight: bold;
+  text-align: start;
+}
+
+.noTableBorder,
+.noTableBorder td,
+.noTableBorder th {
+  background-color: transparent;
+  border: none;
+}