diff --git a/core/misc/vertical-tabs.js b/core/misc/vertical-tabs.js
index eaf73db..303840a 100644
--- a/core/misc/vertical-tabs.js
+++ b/core/misc/vertical-tabs.js
@@ -15,6 +15,11 @@
  */
 Drupal.behaviors.verticalTabs = {
   attach: function (context) {
+
+    if (!Drupal.checkWidthBreakpoint()) {
+      return;
+    }
+
     $(context).find('.vertical-tabs-panes').once('vertical-tabs', function () {
       var $this = $(this);
       var focusID = $this.find(':hidden.vertical-tabs-active-tab').val();
diff --git a/core/themes/seven/style.css b/core/themes/seven/style.css
index 36ff5b3..5718cb6 100644
--- a/core/themes/seven/style.css
+++ b/core/themes/seven/style.css
@@ -538,12 +538,17 @@ fieldset .fieldset-wrapper {
   padding: 0 13px 13px 15px; /* LTR */
 }
 fieldset.collapsed {
-  background-color: transparent;
+  background-color: #f2f2f2;
 }
 .js fieldset.collapsed {
   border-width: 1px;
   height: auto;
 }
+.collapsible + .collapsible {
+  margin-top: -1em;
+  border-top: none;
+}
+
 fieldset fieldset {
   background-color: #fff;
 }