diff --git a/_config.yml b/_config.yml
index 99fc5d6..b290479 100644
--- a/_config.yml
+++ b/_config.yml
@@ -8,3 +8,4 @@ auto: true
 safe: true
 pygments: true
 
+style: light
diff --git a/_layouts/default.html b/_layouts/default.html
index 8d424a5..f2e20b9 100644
--- a/_layouts/default.html
+++ b/_layouts/default.html
@@ -16,7 +16,7 @@
         </script>
         <script type="text/javascript" src="http://cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML"> </script>
         <script src="/javascripts/respond.js"></script>
-        <link rel="stylesheet" href="/stylesheets/styles.css">
+        <link rel="stylesheet" href="/stylesheets/styles_{{ site.style }}.css">
         <link rel="stylesheet" href="/stylesheets/pygment_trac.css">
         <!--[if lt IE 9]>
         <script src="//html5shiv.googlecode.com/svn/trunk/html5.js"></script>
@@ -32,15 +32,14 @@
 
             <section>
             <div id="title">
-                <h1><a style="color:rgb(232,232,232);" href="http://gjankowiak.github.com/">Page personnelle de Gaspard Jankowiak</a></h1>
+                <h1><a href="/">Page personnelle de Gaspard Jankowiak</a></h1>
                 <p>Thésard au Ceremade — Université Paris-Dauphine</p>
                 <hr>
             </div>
-            <nav> <a href="/#recherche">Recherche</a> | <a href="/#publications">Publications</a> | <a href="/#enseignement">Enseignement</a> </nav>
 
             {{ content }}
             <hr>
-            <span class="credits right">Hosted on GitHub Pages &mdash; Theme by <a href="http://twitter.com/#!/michigangraham">mattgraham</a> &mdash;
+            <span class="credits right">Hosted on GitHub Pages &mdash; Theme derived from <a href="http://twitter.com/#!/michigangraham">mattgraham</a> &mdash;
             Powered by <a href="http://jekyllrb.com/">Jekyll</a>
             </span>
             </section>
diff --git a/images/bullet_dark.png b/images/bullet_dark.png
new file mode 100644
index 0000000..aecc75d
Binary files /dev/null and b/images/bullet_dark.png differ
diff --git a/images/icon_lock.png b/images/icon_lock.png
index e208952..ee5f5a9 100644
Binary files a/images/icon_lock.png and b/images/icon_lock.png differ
diff --git a/stylesheets/styles.css b/stylesheets/styles_dark.css
similarity index 85%
rename from stylesheets/styles.css
rename to stylesheets/styles_dark.css
index ead6928..8326e0c 100644
--- a/stylesheets/styles.css
+++ b/stylesheets/styles_dark.css
@@ -701,92 +701,6 @@ dt {
   font-weight: normal;
 }
 
-#header {
-  z-index: 100;
-  left: 0;
-  top: 0px;
-  height: 60px;
-  width: 100%;
-  position: fixed;
-  background: url(../images/nav-bg.gif) #353535;
-  border-bottom: 4px solid #434343;
-  -moz-box-shadow: 0px 1px 3px rgba(0, 0, 0, 0.25);
-  -webkit-box-shadow: 0px 1px 3px rgba(0, 0, 0, 0.25);
-  -o-box-shadow: 0px 1px 3px rgba(0, 0, 0, 0.25);
-  box-shadow: 0px 1px 3px rgba(0, 0, 0, 0.25);
-}
-#header nav {
-  max-width: 650px;
-  margin: 0 auto;
-  padding: 0 10px;
-  background: blue;
-  margin: 6px auto;
-}
-#header nav li {
-  font-family: 'OpenSansLight', "Helvetica Neue", Helvetica, Arial, sans-serif;
-  font-weight: normal;
-  list-style: none;
-  display: inline;
-  color: white;
-  line-height: 50px;
-  text-shadow: 0px 1px 0px rgba(0, 0, 0, 0.2);
-  font-size: 14px;
-}
-#header nav li a {
-  color: white;
-  border: 1px solid #5d910b;
-  background: -webkit-gradient(linear, 50% 0%, 50% 100%, color-stop(0%, #93bd20), color-stop(100%, #659e10));
-  background: -webkit-linear-gradient(#93bd20, #659e10);
-  background: -moz-linear-gradient(#93bd20, #659e10);
-  background: -o-linear-gradient(#93bd20, #659e10);
-  background: -ms-linear-gradient(#93bd20, #659e10);
-  background: linear-gradient(#93bd20, #659e10);
-  -moz-border-radius: 2px;
-  -webkit-border-radius: 2px;
-  -o-border-radius: 2px;
-  -ms-border-radius: 2px;
-  -khtml-border-radius: 2px;
-  border-radius: 2px;
-  -moz-box-shadow: inset 0px 1px 0px rgba(255, 255, 255, 0.3), 0px 3px 7px rgba(0, 0, 0, 0.7);
-  -webkit-box-shadow: inset 0px 1px 0px rgba(255, 255, 255, 0.3), 0px 3px 7px rgba(0, 0, 0, 0.7);
-  -o-box-shadow: inset 0px 1px 0px rgba(255, 255, 255, 0.3), 0px 3px 7px rgba(0, 0, 0, 0.7);
-  box-shadow: inset 0px 1px 0px rgba(255, 255, 255, 0.3), 0px 3px 7px rgba(0, 0, 0, 0.7);
-  background-color: #93bd20;
-  padding: 10px 12px;
-  margin-top: 6px;
-  line-height: 14px;
-  font-size: 14px;
-  display: inline-block;
-  text-align: center;
-}
-#header nav li a:hover {
-  background: -webkit-gradient(linear, 50% 0%, 50% 100%, color-stop(0%, #749619), color-stop(100%, #527f0e));
-  background: -webkit-linear-gradient(#749619, #527f0e);
-  background: -moz-linear-gradient(#749619, #527f0e);
-  background: -o-linear-gradient(#749619, #527f0e);
-  background: -ms-linear-gradient(#749619, #527f0e);
-  background: linear-gradient(#749619, #527f0e);
-  background-color: #659e10;
-  border: 1px solid #527f0e;
-  -moz-box-shadow: inset 0px 1px 1px rgba(0, 0, 0, 0.2), 0px 1px 0px rgba(0, 0, 0, 0);
-  -webkit-box-shadow: inset 0px 1px 1px rgba(0, 0, 0, 0.2), 0px 1px 0px rgba(0, 0, 0, 0);
-  -o-box-shadow: inset 0px 1px 1px rgba(0, 0, 0, 0.2), 0px 1px 0px rgba(0, 0, 0, 0);
-  box-shadow: inset 0px 1px 1px rgba(0, 0, 0, 0.2), 0px 1px 0px rgba(0, 0, 0, 0);
-}
-#header nav li.fork {
-  float: left;
-  margin-left: 0px;
-}
-#header nav li.downloads {
-  float: right;
-  margin-left: 6px;
-}
-#header nav li.title {
-  float: right;
-  margin-right: 10px;
-  font-size: 11px;
-}
-
 section {
   max-width: 650px;
   padding: 30px 0px 50px 0px;
@@ -806,6 +720,9 @@ section #title h1 {
   text-align: center;
   line-height: 27px;
 }
+section #title h1 a {
+    color: inherit;
+}
 section #title p {
   color: #d7cfbe;
   font-family: 'OpenSansLight', "Helvetica Neue", Helvetica, Arial, sans-serif;
@@ -863,9 +780,3 @@ section .credits.right {
 #MathJax_Zoom {
     background-color: #1B1B1B !important;
 }
-
-nav {
-    display: none;
-    font-size: 1.3em;
-    text-align:center;
-}
diff --git a/stylesheets/styles_light.css b/stylesheets/styles_light.css
new file mode 100644
index 0000000..b439462
--- /dev/null
+++ b/stylesheets/styles_light.css
@@ -0,0 +1,780 @@
+@font-face {
+  font-family: 'OpenSansLight';
+  src: url("../fonts/OpenSans-Light.eot");
+  src: url("../fonts/OpenSans-Light.eot?#iefix") format("embedded-opentype"), url("../fonts/OpenSans-Light.woff") format("woff"), url("../fonts/OpenSans-Light.ttf") format("truetype"), url("../fonts/OpenSans-Light.svg#OpenSansLight") format("svg");
+  font-weight: normal;
+  font-style: normal;
+}
+
+@font-face {
+  font-family: 'OpenSansLightItalic';
+  src: url("../fonts/OpenSans-LightItalic-webfont.eot");
+  src: url("../fonts/OpenSans-LightItalic-webfont.eot?#iefix") format("embedded-opentype"), url("../fonts/OpenSans-LightItalic-webfont.woff") format("woff"), url("../fonts/OpenSans-LightItalic-webfont.ttf") format("truetype"), url("../fonts/OpenSans-LightItalic-webfont.svg#OpenSansLightItalic") format("svg");
+  font-weight: normal;
+  font-style: normal;
+}
+
+@font-face {
+  font-family: 'OpenSansRegular';
+  src: url("../fonts/OpenSans-Regular-webfont.eot");
+  src: url("../fonts/OpenSans-Regular-webfont.eot?#iefix") format("embedded-opentype"), url("../fonts/OpenSans-Regular-webfont.woff") format("woff"), url("../fonts/OpenSans-Regular-webfont.ttf") format("truetype"), url("../fonts/OpenSans-Regular-webfont.svg#OpenSansRegular") format("svg");
+  font-weight: normal;
+  font-style: normal;
+  -webkit-font-smoothing: antialiased;
+}
+
+@font-face {
+  font-family: 'OpenSansItalic';
+  src: url("../fonts/OpenSans-Italic-webfont.eot");
+  src: url("../fonts/OpenSans-Italic-webfont.eot?#iefix") format("embedded-opentype"), url("../fonts/OpenSans-Italic-webfont.woff") format("woff"), url("../fonts/OpenSans-Italic-webfont.ttf") format("truetype"), url("../fonts/OpenSans-Italic-webfont.svg#OpenSansItalic") format("svg");
+  font-weight: normal;
+  font-style: normal;
+  -webkit-font-smoothing: antialiased;
+}
+
+@font-face {
+  font-family: 'OpenSansSemibold';
+  src: url("../fonts/OpenSans-Semibold-webfont.eot");
+  src: url("../fonts/OpenSans-Semibold-webfont.eot?#iefix") format("embedded-opentype"), url("../fonts/OpenSans-Semibold-webfont.woff") format("woff"), url("../fonts/OpenSans-Semibold-webfont.ttf") format("truetype"), url("../fonts/OpenSans-Semibold-webfont.svg#OpenSansSemibold") format("svg");
+  font-weight: normal;
+  font-style: normal;
+  -webkit-font-smoothing: antialiased;
+}
+
+@font-face {
+  font-family: 'OpenSansSemiboldItalic';
+  src: url("../fonts/OpenSans-SemiboldItalic-webfont.eot");
+  src: url("../fonts/OpenSans-SemiboldItalic-webfont.eot?#iefix") format("embedded-opentype"), url("../fonts/OpenSans-SemiboldItalic-webfont.woff") format("woff"), url("../fonts/OpenSans-SemiboldItalic-webfont.ttf") format("truetype"), url("../fonts/OpenSans-SemiboldItalic-webfont.svg#OpenSansSemiboldItalic") format("svg");
+  font-weight: normal;
+  font-style: normal;
+  -webkit-font-smoothing: antialiased;
+}
+
+@font-face {
+  font-family: 'OpenSansBold';
+  src: url("../fonts/OpenSans-Bold-webfont.eot");
+  src: url("../fonts/OpenSans-Bold-webfont.eot?#iefix") format("embedded-opentype"), url("../fonts/OpenSans-Bold-webfont.woff") format("woff"), url("../fonts/OpenSans-Bold-webfont.ttf") format("truetype"), url("../fonts/OpenSans-Bold-webfont.svg#OpenSansBold") format("svg");
+  font-weight: normal;
+  font-style: normal;
+  -webkit-font-smoothing: antialiased;
+}
+
+@font-face {
+  font-family: 'OpenSansBoldItalic';
+  src: url("../fonts/OpenSans-BoldItalic-webfont.eot");
+  src: url("../fonts/OpenSans-BoldItalic-webfont.eot?#iefix") format("embedded-opentype"), url("../fonts/OpenSans-BoldItalic-webfont.woff") format("woff"), url("../fonts/OpenSans-BoldItalic-webfont.ttf") format("truetype"), url("../fonts/OpenSans-BoldItalic-webfont.svg#OpenSansBoldItalic") format("svg");
+  font-weight: normal;
+  font-style: normal;
+  -webkit-font-smoothing: antialiased;
+}
+
+/* normalize.css 2012-02-07T12:37 UTC - http://github.com/necolas/normalize.css */
+/* =============================================================================
+   HTML5 display definitions
+   ========================================================================== */
+/*
+ * Corrects block display not defined in IE6/7/8/9 & FF3
+ */
+article,
+aside,
+details,
+figcaption,
+figure,
+footer,
+header,
+hgroup,
+nav,
+section,
+summary {
+  display: block;
+}
+
+/*
+ * Corrects inline-block display not defined in IE6/7/8/9 & FF3
+ */
+audio,
+canvas,
+video {
+  display: inline-block;
+  *display: inline;
+  *zoom: 1;
+}
+
+/*
+ * Prevents modern browsers from displaying 'audio' without controls
+ */
+audio:not([controls]) {
+  display: none;
+}
+
+/*
+ * Addresses styling for 'hidden' attribute not present in IE7/8/9, FF3, S4
+ * Known issue: no IE6 support
+ */
+[hidden] {
+  display: none;
+}
+
+/* =============================================================================
+   Base
+   ========================================================================== */
+/*
+ * 1. Corrects text resizing oddly in IE6/7 when body font-size is set using em units
+ *    http://clagnut.com/blog/348/#c790
+ * 2. Prevents iOS text size adjust after orientation change, without disabling user zoom
+ *    www.456bereastreet.com/archive/201012/controlling_text_size_in_safari_for_ios_without_disabling_user_zoom/
+ */
+html {
+  font-size: 100%;
+  /* 1 */
+  -webkit-text-size-adjust: 100%;
+  /* 2 */
+  -ms-text-size-adjust: 100%;
+  /* 2 */
+}
+
+/*
+ * Addresses font-family inconsistency between 'textarea' and other form elements.
+ */
+html,
+button,
+input,
+select,
+textarea {
+  font-family: sans-serif;
+}
+
+/*
+ * Addresses margins handled incorrectly in IE6/7
+ */
+body {
+  margin: 0;
+}
+
+/* =============================================================================
+   Links
+   ========================================================================== */
+/*
+ * Addresses outline displayed oddly in Chrome
+ */
+a:focus {
+  outline: thin dotted;
+}
+
+/*
+ * Improves readability when focused and also mouse hovered in all browsers
+ * people.opera.com/patrickl/experiments/keyboard/test
+ */
+a:hover,
+a:active {
+  outline: 0;
+}
+
+/* =============================================================================
+   Typography
+   ========================================================================== */
+/*
+ * Addresses font sizes and margins set differently in IE6/7
+ * Addresses font sizes within 'section' and 'article' in FF4+, Chrome, S5
+ */
+h1 {
+  font-size: 2em;
+  margin: 0.67em 0;
+}
+
+h2 {
+  font-size: 1.5em;
+  margin: 0.83em 0;
+}
+
+h3 {
+  font-size: 1.17em;
+  margin: 1em 0;
+}
+
+h4 {
+  font-size: 1em;
+  margin: 1.33em 0;
+}
+
+h5 {
+  font-size: 0.83em;
+  margin: 1.67em 0;
+}
+
+h6 {
+  font-size: 0.75em;
+  margin: 2.33em 0;
+}
+
+/*
+ * Addresses styling not present in IE7/8/9, S5, Chrome
+ */
+abbr[title] {
+  border-bottom: 1px dotted;
+}
+
+/*
+ * Addresses style set to 'bolder' in FF3+, S4/5, Chrome
+*/
+b,
+strong {
+  font-weight: bold;
+}
+
+blockquote {
+  margin: 1em 40px;
+}
+
+/*
+ * Addresses styling not present in S5, Chrome
+ */
+dfn {
+  font-style: italic;
+}
+
+/*
+ * Addresses styling not present in IE6/7/8/9
+ */
+mark {
+  background: #ff0;
+  color: #000;
+}
+
+/*
+ * Addresses margins set differently in IE6/7
+ */
+p,
+pre {
+  margin: 1em 0;
+}
+
+/*
+ * Corrects font family set oddly in IE6, S4/5, Chrome
+ * en.wikipedia.org/wiki/User:Davidgothberg/Test59
+ */
+pre,
+code,
+kbd,
+samp {
+  font-family: monospace, serif;
+  _font-family: 'courier new', monospace;
+  font-size: 1em;
+}
+
+/*
+ * 1. Addresses CSS quotes not supported in IE6/7
+ * 2. Addresses quote property not supported in S4
+ */
+/* 1 */
+q {
+  quotes: none;
+}
+
+/* 2 */
+q:before,
+q:after {
+  content: '';
+  content: none;
+}
+
+small {
+  font-size: 75%;
+}
+
+/*
+ * Prevents sub and sup affecting line-height in all browsers
+ * gist.github.com/413930
+ */
+sub,
+sup {
+  font-size: 75%;
+  line-height: 0;
+  position: relative;
+  vertical-align: baseline;
+}
+
+sup {
+  top: -0.5em;
+}
+
+sub {
+  bottom: -0.25em;
+}
+
+/* =============================================================================
+   Lists
+   ========================================================================== */
+/*
+ * Addresses margins set differently in IE6/7
+ */
+dl,
+menu,
+ol,
+ul {
+  margin: 1em 0;
+}
+
+dd {
+  margin: 0 0 0 40px;
+}
+
+/*
+ * Addresses paddings set differently in IE6/7
+ */
+menu,
+ol,
+ul {
+  padding: 0 0 0 40px;
+}
+
+/*
+ * Corrects list images handled incorrectly in IE7
+ */
+nav ul,
+nav ol {
+  list-style: none;
+  list-style-image: none;
+}
+
+/* =============================================================================
+   Embedded content
+   ========================================================================== */
+/*
+ * 1. Removes border when inside 'a' element in IE6/7/8/9, FF3
+ * 2. Improves image quality when scaled in IE7
+ *    code.flickr.com/blog/2008/11/12/on-ui-quality-the-little-things-client-side-image-resizing/
+ */
+img {
+  border: 0;
+  /* 1 */
+  -ms-interpolation-mode: bicubic;
+  /* 2 */
+}
+
+/*
+ * Corrects overflow displayed oddly in IE9
+ */
+svg:not(:root) {
+  overflow: hidden;
+}
+
+/* =============================================================================
+   Figures
+   ========================================================================== */
+/*
+ * Addresses margin not present in IE6/7/8/9, S5, O11
+ */
+figure {
+  margin: 0;
+}
+
+/* =============================================================================
+   Forms
+   ========================================================================== */
+/*
+ * Corrects margin displayed oddly in IE6/7
+ */
+form {
+  margin: 0;
+}
+
+/*
+ * Define consistent border, margin, and padding
+ */
+fieldset {
+  border: 1px solid #c0c0c0;
+  margin: 0 2px;
+  padding: 0.35em 0.625em 0.75em;
+}
+
+/*
+ * 1. Corrects color not being inherited in IE6/7/8/9
+ * 2. Corrects text not wrapping in FF3 
+ * 3. Corrects alignment displayed oddly in IE6/7
+ */
+legend {
+  border: 0;
+  /* 1 */
+  padding: 0;
+  white-space: normal;
+  /* 2 */
+  *margin-left: -7px;
+  /* 3 */
+}
+
+/*
+ * 1. Corrects font size not being inherited in all browsers
+ * 2. Addresses margins set differently in IE6/7, FF3+, S5, Chrome
+ * 3. Improves appearance and consistency in all browsers
+ */
+button,
+input,
+select,
+textarea {
+  font-size: 100%;
+  /* 1 */
+  margin: 0;
+  /* 2 */
+  vertical-align: baseline;
+  /* 3 */
+  *vertical-align: middle;
+  /* 3 */
+}
+
+/*
+ * Addresses FF3/4 setting line-height on 'input' using !important in the UA stylesheet
+ */
+button,
+input {
+  line-height: normal;
+  /* 1 */
+}
+
+/*
+ * 1. Improves usability and consistency of cursor style between image-type 'input' and others
+ * 2. Corrects inability to style clickable 'input' types in iOS
+ * 3. Removes inner spacing in IE7 without affecting normal text inputs
+ *    Known issue: inner spacing remains in IE6
+ */
+button,
+input[type="button"],
+input[type="reset"],
+input[type="submit"] {
+  cursor: pointer;
+  /* 1 */
+  -webkit-appearance: button;
+  /* 2 */
+  *overflow: visible;
+  /* 3 */
+}
+
+/*
+ * Re-set default cursor for disabled elements
+ */
+button[disabled],
+input[disabled] {
+  cursor: default;
+}
+
+/*
+ * 1. Addresses box sizing set to content-box in IE8/9
+ * 2. Removes excess padding in IE8/9
+ * 3. Removes excess padding in IE7
+      Known issue: excess padding remains in IE6
+ */
+input[type="checkbox"],
+input[type="radio"] {
+  box-sizing: border-box;
+  /* 1 */
+  padding: 0;
+  /* 2 */
+  *height: 13px;
+  /* 3 */
+  *width: 13px;
+  /* 3 */
+}
+
+/*
+ * 1. Addresses appearance set to searchfield in S5, Chrome
+ * 2. Addresses box-sizing set to border-box in S5, Chrome (include -moz to future-proof)
+ */
+input[type="search"] {
+  -webkit-appearance: textfield;
+  /* 1 */
+  -moz-box-sizing: content-box;
+  -webkit-box-sizing: content-box;
+  /* 2 */
+  box-sizing: content-box;
+}
+
+/*
+ * Removes inner padding and search cancel button in S5, Chrome on OS X
+ */
+input[type="search"]::-webkit-search-decoration,
+input[type="search"]::-webkit-search-cancel-button {
+  -webkit-appearance: none;
+}
+
+/*
+ * Removes inner padding and border in FF3+
+ * www.sitepen.com/blog/2008/05/14/the-devils-in-the-details-fixing-dojos-toolbar-buttons/
+ */
+button::-moz-focus-inner,
+input::-moz-focus-inner {
+  border: 0;
+  padding: 0;
+}
+
+/*
+ * 1. Removes default vertical scrollbar in IE6/7/8/9
+ * 2. Improves readability and alignment in all browsers
+ */
+textarea {
+  overflow: auto;
+  /* 1 */
+  vertical-align: top;
+  /* 2 */
+}
+
+/* =============================================================================
+   Tables
+   ========================================================================== */
+/*
+ * Remove most spacing between table cells
+ */
+table {
+  border-collapse: collapse;
+  border-spacing: 0;
+}
+
+body {
+  padding: 0px 0 20px 0px;
+  margin: 0px;
+  font: 14px/1.5 "OpenSansRegular", "Helvetica Neue", Helvetica, Arial, sans-serif;
+  color: #333;
+  font-weight: normal;
+  background-color: #EEF;
+  /*background-attachment: fixed !important;
+  background: -webkit-gradient(linear, 50% 0%, 50% 100%, color-stop(0%, #2a2a29), color-stop(100%, #1c1c1c));
+  background: -webkit-linear-gradient(#2a2a29, #1c1c1c);
+  background: -moz-linear-gradient(#2a2a29, #1c1c1c);
+  background: -o-linear-gradient(#2a2a29, #1c1c1c);
+  background: -ms-linear-gradient(#2a2a29, #1c1c1c);
+  background: linear-gradient(#2a2a29, #1c1c1c);*/
+}
+
+h1, h2, h3, h4, h5, h6 {
+  color: #222;
+  margin: 0 0 10px;
+  font-family: 'OpenSansRegular', "Helvetica Neue", Helvetica, Arial, sans-serif;
+  font-weight: normal;
+}
+
+p {
+    text-align: justify;
+}
+
+p, ul, ol, table, pre, dl {
+  margin: 0 0 20px;
+}
+
+h1, h2, h3 {
+  line-height: 1.1;
+}
+
+h1 {
+  font-size: 28px;
+}
+
+h2 {
+  font-size: 24px;
+}
+
+h4, h5, h6 {
+  color: #111;
+}
+
+h3 {
+  font-size: 18px;
+  line-height: 24px;
+  font-family: 'OpenSansRegular', "Helvetica Neue", Helvetica, Arial, sans-serif !important;
+  font-weight: normal;
+  color: #444;
+}
+
+a {
+  color: #5500ff; /* yellow */
+  /*color: #7777ff; blue */
+  /*color: #33ff33; green */
+  font-weight: 400;
+  text-decoration: none;
+}
+a:hover {
+  color: #7777ff; /* yellow */
+  /*color: #9999ff; blue */
+  /*color: #99ff99; green */
+}
+
+a small {
+  font-size: 11px;
+  color: #666;
+  margin-top: -0.6em;
+  display: block;
+}
+
+ul {
+  list-style-image: url("../images/bullet_dark.png");
+}
+
+strong {
+  font-family: 'OpenSansBold', "Helvetica Neue", Helvetica, Arial, sans-serif !important;
+  font-weight: normal;
+}
+
+.wrapper {
+  max-width: 650px;
+  margin: 0 auto;
+  position: relative;
+  padding: 0 20px;
+}
+
+section img {
+  max-width: 100%;
+}
+
+blockquote {
+  border-left: 3px solid #ffcc00;
+  margin: 0;
+  padding: 0 0 0 20px;
+  font-style: italic;
+}
+
+code {
+  font-family: "Lucida Sans", Monaco, Bitstream Vera Sans Mono, Lucida Console, Terminal;
+  font-size: 13px;
+  margin: 0 4px;
+  padding: 4px 6px;
+  -moz-border-radius: 2px;
+  -webkit-border-radius: 2px;
+  -o-border-radius: 2px;
+  -ms-border-radius: 2px;
+  -khtml-border-radius: 2px;
+  border-radius: 2px;
+}
+
+pre {
+  padding: 8px 15px;
+  background: #e5e5f5;
+  -moz-border-radius: 2px;
+  -webkit-border-radius: 2px;
+  -o-border-radius: 2px;
+  -ms-border-radius: 2px;
+  -khtml-border-radius: 2px;
+  border-radius: 2px;
+  border: 1px solid #aaa;
+  -moz-box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.3);
+  -webkit-box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.3);
+  -o-box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.3);
+  box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.3);
+  overflow: auto;
+  overflow-y: hidden;
+}
+pre code {
+  margin: 0;
+  padding: 0;
+}
+
+table {
+  width: 100%;
+  border-collapse: collapse;
+}
+
+th {
+  text-align: left;
+  padding: 5px 10px;
+  border-bottom: 1px solid #434343;
+  color: #b6b6b6;
+  font-family: 'OpenSansSemibold', "Helvetica Neue", Helvetica, Arial, sans-serif !important;
+  font-weight: normal;
+}
+
+td {
+  text-align: left;
+  padding: 5px 10px;
+  border-bottom: 1px solid #434343;
+}
+
+hr {
+  border: none;
+  height: 1px;
+  background-color: #aaa;
+  margin: 0 0 20px;
+}
+
+dt {
+  color: #F0E7D5;
+  font-family: 'OpenSansSemibold', "Helvetica Neue", Helvetica, Arial, sans-serif !important;
+  font-weight: normal;
+}
+
+section {
+  max-width: 650px;
+  padding: 30px 0px 50px 0px;
+  margin: 20px 0;
+  margin-top: 70px;
+}
+section #title {
+  border: 0;
+  outline: none;
+  margin: 0;
+  padding: 0 0 5px 0;
+}
+section #title h1 {
+  font-family: 'OpenSansLight', "Helvetica Neue", Helvetica, Arial, sans-serif;
+  font-weight: normal;
+  font-size: 30px;
+  text-align: center;
+  line-height: 27px;
+  color: #333;
+}
+section #title h1 a {
+    color: inherit;
+}
+section #title p {
+  color: #444;
+  font-family: 'OpenSansLight', "Helvetica Neue", Helvetica, Arial, sans-serif;
+  font-weight: normal;
+  font-size: 18px;
+  text-align: center;
+}
+section .credits {
+  font-size: 11px;
+  font-family: 'OpenSansRegular', "Helvetica Neue", Helvetica, Arial, sans-serif;
+  font-weight: normal;
+  color: #696969;
+  margin-top: -10px;
+}
+section .credits.left {
+  float: left;
+}
+section .credits.right {
+  float: right;
+}
+
+@media print, screen and (max-width: 720px) {
+  .credits {
+    display: block;
+    width: 100%;
+    line-height: 30px;
+    text-align: center;
+  }
+  .credits .left {
+    float: none;
+    display: block;
+  }
+  .credits .right {
+    float: none;
+    display: block;
+  }
+}
+@media print, screen and (max-width: 480px) {
+  #header {
+    margin-top: -20px;
+  }
+
+  section {
+    margin-top: 40px;
+  }
+
+  nav {
+    display: none;
+  }
+}
+
+.MathJax_Display {
+    font-size: 120%;
+}
+#MathJax_Zoom {
+    background-color: #1B1B1B !important;
+}