diff --git a/doxygen/extra_stylesheet.css b/doxygen/extra_stylesheet.css
index e69de29b..40994aef 100644
--- a/doxygen/extra_stylesheet.css
+++ b/doxygen/extra_stylesheet.css
@@ -0,0 +1,131 @@
+@import 'https://fonts.googleapis.com/css?family=Open+Sans';
+
+body {
+	font-family: 'Open Sans', sans-serif;
+	background-color: #222;
+	color: #ccc;
+}
+
+#nav-tree {
+	background-color: #222;
+	background-image: none;
+}
+
+#side-nav {
+	width: 300px;
+}
+
+#titlearea {
+	border: none;
+	padding: 5px;
+}
+
+div.header {
+	background-color: #2a2a2a !important;
+}
+
+h2.groupheader {
+	color: #ccc;
+}
+
+.mdescLeft, .mdescRight, .memItemLeft, .memItemRight, .memTemplItemLeft, .memTemplItemRight, .memTemplParams {
+	background-color: #333;
+	color: #ccc;
+}
+
+.directory tr.even {
+	background-color: #3f3f3f;
+}
+
+a, .contents a:visited {
+	color: #548cff;
+}
+
+.memtitle {
+	background-color: #555 !important;
+	background-image: none;
+
+    border-top: 1px solid #717171;
+    border-left: 1px solid #717171;
+    border-right: 1px solid #717171;
+}
+
+.memdoc, dl.reflist dd {
+	background-color: #444;
+
+    border-bottom: 1px solid #717171;
+    border-left: 1px solid #717171;
+    border-right: 1px solid #717171;
+}
+
+.memproto, dl.reflist dt {
+	background-color: #555;
+	color: #ccc;
+	text-shadow: 0px 1px 1px rgba(0, 0, 0, 0.9);
+
+	border-top: 1px solid #717171;
+    border-left: 1px solid #717171;
+    border-right: 1px solid #717171;
+}
+
+div.header {
+	border-bottom: 1px solid #717171;
+	background-image: none;
+}
+
+.paramname {
+	color: #ff5a5a;
+}
+
+.memtemplate {
+	color: #6e9eff;
+}
+
+.memSeparator, h2.groupheader {
+	border-bottom: 1px solid #545454;
+}
+
+.navelem, .navpath ul {
+	background-color: #333;
+	background-image: none;
+}
+
+.navpath ul {
+	border: solid 1px #717171;
+}
+
+.navpath li.footer {
+	color: #548cff;
+}
+
+.navpath li.navelem a, .navpath li.navelem a:visited {
+	color: #ccc;
+	text-shadow: 0px 1px 1px rgba(0, 0, 0, 0.9);
+}
+
+.ui-resizable-e {
+	background-image: none;
+	background-color: #717171;
+}
+
+.sm-dox {
+	background-image: none;
+	background-color: #333;
+}
+
+.sm-dox a {
+	color: #ccc;
+    text-shadow: 0px 1px 1px #000;
+}
+
+.sm-dox a span.sub-arrow {
+	border-color: #ccc transparent transparent transparent;
+}
+
+.sm-dox a, .sm-dox a:focus, .sm-dox a:active, .sm-dox a:hover, .sm-dox a.highlighted {
+	background-image: none;
+}
+
+#main-nav {
+	border-top: 1px solid #717171;
+}
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