diff --git a/core/themes/bartik/css/style-rtl.css b/core/themes/bartik/css/style-rtl.css
index dc7c2a4..d9dc124 100644
--- a/core/themes/bartik/css/style-rtl.css
+++ b/core/themes/bartik/css/style-rtl.css
@@ -72,7 +72,14 @@ ul.tips {
 
 #main-menu ul.links li,
 #main-menu ul.links li a {
-  float: right;
+  float: none;
+}
+
+/* ---------- Main Menu Toggle ----------- */
+
+body:not(:target) #main-menu-reveal:after {
+  left: 10px;
+  right: auto;
 }
 
 /* --------------- Secondary Menu ------------ */
@@ -266,4 +273,21 @@ ul.tips {
   padding: 0 2px 4px 0;
 }
 
+/* ----------- media queries ------------------------------- */
+
+@media all and (min-width: 461px) and (max-width: 900px) {
+  /* ------------ Header and Menus -------------------------- */
+  #main-menu ul.links li {
+    float: right;
+  }
+}
+
+@media all and (min-width: 901px) {
+  /* ------------ Header and Menus -------------------------- */
+  #main-menu ul.links li,
+  #main-menu ul.links li a {
+    float: right;
+  }
+}
+
 /* @end */
diff --git a/core/themes/bartik/css/style.css b/core/themes/bartik/css/style.css
index 44deab1..a393531 100644
--- a/core/themes/bartik/css/style.css
+++ b/core/themes/bartik/css/style.css
@@ -483,6 +483,7 @@ h1#site-name {
   list-style: none;
   margin: 0;
   padding: 0;
+  height: auto;
   width: 100%;
 }
 #main-menu-links a {
@@ -510,6 +511,58 @@ h1#site-name {
   border-bottom: none;
 }
 
+/* ---------- Main Menu Toggle ----------- */
+
+#main-menu-reveal {
+  display: none;
+}
+body:not(:target) #main-menu-reveal {
+  color: #333;
+  background: #ccc;
+  background: rgba(255, 255, 255, 0.7);
+  float: none;
+  font-size: 0.929em;
+  display: block;
+  text-decoration: none;
+  text-shadow: 0 1px #eee;
+  padding: 0.9em 10px 0.9em 10px;
+  z-index: 1000;
+}
+body:not(:target) #main-menu-reveal:after {
+  content:"";
+  background: url('../images/toggle.png') no-repeat;
+  width: 22px;
+  height: 22px;
+  display: inline-block;
+  position: absolute;
+  right: 10px;
+}
+#main-menu-links .menu-hide a {
+  display: none;
+}
+body:not(:target) #main-menu-links:target .menu-hide a {
+  background-color: transparent;
+  border: none;
+  display: block;
+  width: 100%;
+  height: auto;
+  position: absolute;
+  left: 0;
+  right: 0;
+  overflow: hidden;
+  text-indent: 100%;
+  white-space: nowrap;
+  z-index: 1001;
+}
+body:not(:target) #main-menu-links li {
+  height: 0;
+  overflow: hidden;
+}
+body:not(:target) #main-menu-links:target li {
+  height: auto;
+  overflow: visible;
+}
+
 /* --------------- Secondary Menu ------------ */
 
 #secondary-menu-links {
@@ -1539,12 +1592,15 @@ div.admin-panel .description {
     padding: 0;
     text-align: center;
   }
-  #main-menu-links li {
+  #main-menu-links li,
+  body:not(:target) #main-menu-links li {
     float: left;
     margin-right: 5px;
     padding: 0;
     display: inline-block;
     width: 32.75%;
+    height: auto;
+    overflow: visible;
   }
   #main-menu-links li:nth-child(3n) {
     margin-right: -5px;
@@ -1556,6 +1612,9 @@ div.admin-panel .description {
     margin-bottom: 5px;
     padding: 0.9em 5px;
   }
+  body:not(:target) #main-menu-reveal {
+    display: none;
+  }
 }
 
 @media all and (min-width: 901px) {
@@ -1578,12 +1637,15 @@ div.admin-panel .description {
     margin: 0;
     padding: 0 15px;
   }
-  #main-menu-links li {
+  #main-menu-links li,
+  body:not(:target) #main-menu-links li {
     float: left; /* LTR */
     list-style: none;
     padding: 0 1px;
     margin: 0 1px;
     width: auto;
+    height: auto;
+    overflow: visible;
   }
   #main-menu-links a {
     float: left; /* LTR */
@@ -1597,6 +1659,9 @@ div.admin-panel .description {
   background: #f0f0f0;
   background: rgba(240, 240, 240, 1.0);
   }
+  body:not(:target) #main-menu-reveal {
+    display: none;
+  }
 }
 
 @media all and (min-width: 520px) {
diff --git a/core/themes/bartik/images/toggle.png b/core/themes/bartik/images/toggle.png
new file mode 100644
index 0000000..33551b8
--- /dev/null
+++ b/core/themes/bartik/images/toggle.png
@@ -0,0 +1,4 @@
+PNG
+
+   IHDR         Ĵl;   tEXtSoftware Adobe ImageReadyqe<  "iTXtXML:com.adobe.xmp     <?xpacket begin="﻿" id="W5M0MpCehiHzreSzNTczkc9d"?> <x:xmpmeta xmlns:x="adobe:ns:meta/" x:xmptk="Adobe XMP Core 5.3-c011 66.145661, 2012/02/06-14:56:27        "> <rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"> <rdf:Description rdf:about="" xmlns:xmp="http://ns.adobe.com/xap/1.0/" xmlns:xmpMM="http://ns.adobe.com/xap/1.0/mm/" xmlns:stRef="http://ns.adobe.com/xap/1.0/sType/ResourceRef#" xmp:CreatorTool="Adobe Photoshop CS6 (Windows)" xmpMM:InstanceID="xmp.iid:36A1E4F94D2711E285EEEC7EA196AFD7" xmpMM:DocumentID="xmp.did:36A1E4FA4D2711E285EEEC7EA196AFD7"> <xmpMM:DerivedFrom stRef:instanceID="xmp.iid:36A1E4F74D2711E285EEEC7EA196AFD7" stRef:documentID="xmp.did:36A1E4F84D2711E285EEEC7EA196AFD7"/> </rdf:Description> </rdf:RDF> </x:xmpmeta> <?xpacket end="r"?>"E   IDATxԕ;0D"%\ )}tA
+38NZ7ONbuf>Wp@QK0`Ow'~3xj'JM$fplvfwGWA,cs7gƲ9]^}QOxD\	)>ӟ  9+ V    IENDB`
\ No newline at end of file
diff --git a/core/themes/bartik/template.php b/core/themes/bartik/template.php
index 9a6c8a9..16d44e6 100644
--- a/core/themes/bartik/template.php
+++ b/core/themes/bartik/template.php
@@ -75,6 +75,15 @@ function bartik_process_page(&$variables) {
     // Make sure the shortcut link is the first item in title_suffix.
     $variables['title_suffix']['add_or_remove_shortcut']['#weight'] = -100;
   }
+  // Add a hide menu item to the main menu
+  if ($variables['main_menu']) {
+    $variables['main_menu']['menu-hide'] = array(
+      'title' => t('Hide menu'),
+      'href' => '',
+      'fragment' => ' ',
+      'external' => TRUE,
+    );
+  }
 }
 
 /**
diff --git a/core/themes/bartik/templates/page.tpl.php b/core/themes/bartik/templates/page.tpl.php
index 08cc357..207a123 100644
--- a/core/themes/bartik/templates/page.tpl.php
+++ b/core/themes/bartik/templates/page.tpl.php
@@ -156,6 +156,7 @@
             'class' => array('element-invisible'),
           ),
         )); ?>
+        <a id="main-menu-reveal" href="#main-menu-links"><?php echo t('Menu'); ?></a>
       </nav> <!-- /#main-menu -->
     <?php endif; ?>
 
