new file mode 100644
--- /dev/null
+++ b/PDFViewer.help/Contents/Resources/English.lproj/sty/main.css
@@ -0,0 +1,109 @@
+/**
+ * Main Stylesheet for Help-Books
+ *
+ * @copyright   Copyright(C) 2017 4customers Productions
+ * @author      Markus Bröker<mbroeker@4customers.de>
+ */
+html, body, h1, h2, h3, h4, p {
+  display: block;
+
+  margin: 0;
+  padding: 0;
+
+  vertical-align: baseline;
+}
+
+span {
+  display: inline-block;
+}
+
+span { vertical-align: baseline; }
+hr { margin-bottom: 20px; }
+ul, ol { list-style: none; }
+
+a {
+  text-decoration: none;
+  padding: 10px;
+  color: #fff;
+}
+
+/* Defaults für dieses Projekt */
+h1, h2, h3, h4, p { padding: 5px; }
+
+html, body {
+  height: 100%;
+}
+
+body {
+  background-color: rgba(21, 48, 80, 1.0);
+  color: #fff;
+}
+
+.left { float: left; }
+.right { float: right; }
+
+.text-left { text-align: left; }
+.text-right { text-align: right; }
+.text-center { text-align: center; }
+
+.row:after {
+  content: "";
+  display: table;
+  clear: both;
+}
+
+.column-1, .column-2, .column-3, .column-4 {
+  float: left;
+}
+
+.column-1 { width: 100%; }
+.column-2 { width: 50%; }
+.column-3 { width: 33.333333333%; }
+.column-4 { width: 25%; }
+
+.white-bg {
+  color: rgba(21, 48, 80, 1.0);
+  background-color: #fff;
+}
+
+.img {
+  width: auto;
+  height: auto;
+}
+
+.img-responsive {
+  width: 100%;
+}
+
+.page {
+  padding: 15px;
+}
+
+.content {
+  padding-top: 20px;
+}
+
+.footer {
+  display: block;
+  width: 100%;
+
+  position: fixed;
+  bottom: 0;
+
+  overflow: hidden;
+  text-overflow: ellipsis;
+  max-height: 40px;
+  height: auto;
+}
+
+.footer p {
+  text-align: center;
+}
+
+.footer a {
+  text-align: center;
+
+  color: rgba(21, 48, 80, 1.0);
+
+  font-size: 2em;
+}