diff --git a/core/misc/collapse.js b/core/misc/collapse.js
index 9115dd6..e9b8330 100644
--- a/core/misc/collapse.js
+++ b/core/misc/collapse.js
@@ -95,9 +95,6 @@
 
   Drupal.behaviors.collapse = {
     attach: function (context) {
-      if (Modernizr.details) {
-        return;
-      }
       var $collapsibleDetails = $(context).find('details').once('collapse');
       if ($collapsibleDetails.length) {
         for (var i = 0; i < $collapsibleDetails.length; i++) {
diff --git a/core/modules/comment/comment-entity-form.js b/core/modules/comment/comment-entity-form.js
index b41ab84..28ca8a5 100644
--- a/core/modules/comment/comment-entity-form.js
+++ b/core/modules/comment/comment-entity-form.js
@@ -10,8 +10,8 @@
   Drupal.behaviors.commentFieldsetSummaries = {
     attach: function (context) {
       var $context = $(context);
-      $context.find('fieldset.comment-entity-settings-form').drupalSetSummary(function (context) {
-        return Drupal.checkPlain($(context).find('.form-item-comment input:checked').next('label').text());
+      $context.find('.comment-node-settings-form').drupalSetSummary(function (context) {
+        return Drupal.checkPlain($(context).find('.form-item-comment-0-status input:checked').next('label').text());
       });
     }
   };
diff --git a/core/modules/system/css/system.theme.css b/core/modules/system/css/system.theme.css
index f3a7490..50589f8 100644
--- a/core/modules/system/css/system.theme.css
+++ b/core/modules/system/css/system.theme.css
@@ -230,7 +230,7 @@ summary {
   padding-left: 0.5em;
   padding-right: 0.5em;
 }
-.collapse-processed > summary:before {
+.no-details .collapse-processed > summary:before {
   background: url(../../../misc/menu-expanded.png) 0px 100% no-repeat; /* LTR */
   content: "";
   float: left;
diff --git a/core/themes/seven/css/style.css b/core/themes/seven/css/style.css
index c911eee..40dbf78 100644
--- a/core/themes/seven/css/style.css
+++ b/core/themes/seven/css/style.css
@@ -1489,7 +1489,9 @@ details.fieldset-no-legend {
   text-shadow: 0 1px 0 white;
 }
 .entity-meta details .summary {
- display: none; /* Hide JS summaries. @todo Rethink summaries. */
+  color: #666;
+  text-transform: none;
+  font-size: 0.85em;
 }
 
 /**