diff --git a/styles/readtheorg/css/readtheorg.css b/styles/readtheorg/css/readtheorg.css
old mode 100755
new mode 100644
index 4b62f22..e4b4386
--- a/styles/readtheorg/css/readtheorg.css
+++ b/styles/readtheorg/css/readtheorg.css
@@ -1,3 +1,4 @@
+
 @import url(https://fonts.googleapis.com/css?family=Lato:400,700,400italic,700italic|Roboto+Slab:400,700|Inconsolata:400,700);
 @import url(http://maxcdn.bootstrapcdn.com/font-awesome/4.3.0/css/font-awesome.min.css);
 
@@ -404,6 +405,53 @@ table tr:nth-child(2n) td{
     transform:rotate(270deg);
 }
 
+#toggle-sidebar,
+#table-of-contents .close-sidebar {
+    display: none;
+}
+
+@media screen and (max-width: 768px) {
+    #table-of-contents {
+        display: none;
+        width: 60%;
+    }
+
+    #table-of-contents h2 a {
+        display: block;
+    }
+
+    #table-of-contents:target {
+        display: block;
+    }
+
+    #copyright, #postamble {
+        display: none;
+    }
+
+    #toggle-sidebar {
+        background-color: #2980B9;
+        display: block;
+        margin-bottom: 1.6em;
+        padding: 0.6em;
+        text-align: center;
+    }
+
+    #toggle-sidebar h2 {
+        color: white;
+        font-size: 100%;
+        line-height: 50px;
+        margin: 0;
+        padding: 0;
+    }
+
+    #table-of-contents .close-sidebar {
+       color: rgba(255, 255, 255, 0.3);
+       display: inline-block;
+       margin: 0px 10px 0px 45px;
+       padding: 10px;
+    }
+}
+
 *{
     -webkit-box-sizing:border-box;
     -moz-box-sizing:border-box;
diff --git a/styles/readtheorg/js/readtheorg.js b/styles/readtheorg/js/readtheorg.js
index 5597814..8dae9d0 100644
--- a/styles/readtheorg/js/readtheorg.js
+++ b/styles/readtheorg/js/readtheorg.js
@@ -1,3 +1,4 @@
+
 $(function() {
     $('.note').before("<p class='admonition-title note'>Note</p>");
     $('.seealso').before("<p class='admonition-title seealso'>See also</p>");
@@ -39,11 +40,19 @@ $( document ).ready(function() {
     // add sticky table headers
     $('table').stickyTableHeaders();
 
+    // set the height of tableOfContents
     var $postamble = $('#postamble');
     var $tableOfContents = $('#table-of-contents');
-    // set the height of tableOfContents
-    $tableOfContents.height($tableOfContents.height() - $postamble.outerHeight());
+    $tableOfContents.css({paddingBottom: $postamble.outerHeight()});
 
+    // add TOC button
+    var toggleSidebar = $('<div id="toggle-sidebar"><a href="#table-of-contents"><h2>Table of Contents</h2></a></div>');
+    $('#content').prepend(toggleSidebar);
+
+    // add close button when sidebar showed in mobile screen
+    var closeBtn = $('<a class="close-sidebar" href="#">Close</a>');
+    var tocTitle = $('#table-of-contents').find('h2');
+    tocTitle.append(closeBtn);
 });
 
 window.SphinxRtdTheme = (function (jquery) {
diff --git a/styles/readtheorg/readtheorg.org b/styles/readtheorg/readtheorg.org
index 61dc100..ffba8f4 100644
--- a/styles/readtheorg/readtheorg.org
+++ b/styles/readtheorg/readtheorg.org
@@ -6,7 +6,7 @@
 #+LANGUAGE:  en
 #+OPTIONS:   H:4 num:t toc:2
 
-#+SETUPFILE: ~/src/org-html-themes/setup/theme-readtheorg-local-abs.setup
+#+SETUPFILE: ~/.dotfiles/org/theme-readtheorg-local-abs.setup
 
 # See http://pandoc.org/README.html for another organization of the sections
 
@@ -538,6 +538,57 @@ table tr:nth-child(2n) td{
   :header-args: :tangle css/readtheorg.css
   :END:
 
+Responsive for sidebar:
+
+#+begin_src css
+#toggle-sidebar,
+#table-of-contents .close-sidebar {
+    display: none;
+}
+
+@media screen and (max-width: 768px) {
+    #table-of-contents {
+        display: none;
+        width: 60%;
+    }
+
+    #table-of-contents h2 a {
+        display: block;
+    }
+
+    #table-of-contents:target {
+        display: block;
+    }
+
+    #copyright, #postamble {
+        display: none;
+    }
+
+    #toggle-sidebar {
+        background-color: #2980B9;
+        display: block;
+        margin-bottom: 1.6em;
+        padding: 0.6em;
+        text-align: center;
+    }
+
+    #toggle-sidebar h2 {
+        color: white;
+        font-size: 100%;
+        line-height: 50px;
+        margin: 0;
+        padding: 0;
+    }
+
+    #table-of-contents .close-sidebar {
+       color: rgba(255, 255, 255, 0.3);
+       display: inline-block;
+       margin: 0px 10px 0px 45px;
+       padding: 10px;
+    }
+}
+#+end_src
+
 * CSS
   :PROPERTIES:
   :header-args: :tangle css/readtheorg.css
@@ -1412,6 +1463,20 @@ $( document ).ready(function() {
 
     // add sticky table headers
     $('table').stickyTableHeaders();
+
+    // set the height of tableOfContents
+    var $postamble = $('#postamble');
+    var $tableOfContents = $('#table-of-contents');
+    $tableOfContents.css({paddingBottom: $postamble.outerHeight()});
+
+    // add TOC button
+    var toggleSidebar = $('<div id="toggle-sidebar"><a href="#table-of-contents"><h2>Table of Contents</h2></a></div>');
+    $('#content').prepend(toggleSidebar);
+
+    // add close button when sidebar showed in mobile screen
+    var closeBtn = $('<a class="close-sidebar" href="#">Close</a>');
+    var tocTitle = $('#table-of-contents').find('h2');
+    tocTitle.append(closeBtn);
 });
 
 window.SphinxRtdTheme = (function (jquery) {