Respond.js compatibility: main tag not recognized

Author: nicomollet

footer.php

@@ -9,7 +9,7 @@
 
       </div>
       <!-- /.main-inner -->
-    </main>
+    </div>
     <!-- /#main -->
   </div>
     <!-- /.main-wrapper -->

functions.php

@@ -223,6 +223,7 @@ function stormbringer_js_footer() {
   //wp_enqueue_script('jquery-validate','//cdnjs.cloudflare.com/ajax/libs/jquery-validate/1.11.0/jquery.validate.min.js', array('jquery'), null, true);
   //wp_enqueue_script('jquery-easing','//cdnjs.cloudflare.com/ajax/libs/jquery-easing/1.3/jquery.easing.min.js', array('jquery'), null, true);
 
+  wp_enqueue_script('respond','//cdnjs.cloudflare.com/ajax/libs/respond.js/1.3.0/respond.js', array(), null, false);
   wp_enqueue_script('selectivizr','//cdnjs.cloudflare.com/ajax/libs/selectivizr/1.0.2/selectivizr-min.js', array(), null, true);
   //wp_enqueue_script('addthis','//s7.addthis.com/js/300/addthis_widget.js'.(defined('ADDTHIS_PROFILE')?'#pubid='.ADDTHIS_PROFILE:''), array(), null, true);
 

header.php

@@ -73,5 +73,5 @@
   </header>
 
   <div class="main-wrapper">
-    <main id="main">
+    <div id="main">
       <div class="main-inner">

less/_common.less

@@ -5,19 +5,6 @@
 .text-color{color:@text-color}
 @white: #ffffff;
 
-
-
-/* Focus */
-::-moz-selection {
-    background: @link-color !important;
-    color: #fff
-}
-
-::selection {
-    background: @link-color !important;
-    color: #fff
-}
-
 /* Fancybox */
 #fancybox-ajaxcontainer{
   display: none;