diff --git a/core/modules/block/block.js b/core/modules/block/block.js
index f8c2112..e0e508b 100644
--- a/core/modules/block/block.js
+++ b/core/modules/block/block.js
@@ -44,15 +44,15 @@ Drupal.behaviors.blockSettingsSummary = {
     $('#edit-basic').drupalSetSummary(function (context) {
       var basic = [];
       var title = $(context).find('#edit-label').val();
-      basic.push(Drupal.t('Title: @title', {'@title' : title ? title : Drupal.t('Empty') }));
-      basic.push(Drupal.t('Region: @region', {'@region' : $(context).find('#edit-region option:selected').text() }));
+      basic.push(Drupal.t('<strong>Title</strong>: @title', {'@title' : title ? title : Drupal.t('Empty') }));
+      basic.push(Drupal.t('<strong>Region</strong>: @region', {'@region' : $(context).find('#edit-region option:selected').text() }));
       return basic.join(', ');
     });
     $('#edit-display').drupalSetSummary(function (context) {
       var visibility = [];
       var panes = $(context).find('.vertical-tab-button');
       for (var i = 0, il = panes.length; i < il; i += 1) {
-        visibility.push($(panes[i]).find('a strong').text() + ': ' + $(panes[i]).find('a .summary').text());
+        visibility.push('<strong>' + $(panes[i]).find('a strong').text() + '</strong>: ' + $(panes[i]).find('a .summary').text());
       }
       return visibility.join(', ');
     });
diff --git a/core/modules/contact/contact.js b/core/modules/contact/contact.js
index 49b4aba..40eb521 100644
--- a/core/modules/contact/contact.js
+++ b/core/modules/contact/contact.js
@@ -9,20 +9,20 @@ Drupal.behaviors.contactDetailsSummaries = {
       var basic = [];
       var title = $(context).find('#edit-label').val();
       var recipients = $(context).find('#edit-recipients').val();
-      basic.push(Drupal.t('Title: @title', {'@title' : title ? title : Drupal.t('Empty') }));
-      basic.push(Drupal.t('Recipients: @recipients', {'@recipients' : recipients ? recipients : Drupal.t('Empty') }));
+      basic.push(Drupal.t('<strong>Title</strong>: @title', {'@title' : title ? title : Drupal.t('Empty') }));
+      basic.push(Drupal.t('<strong>Recipients</strong>: @recipients', {'@recipients' : recipients ? recipients : Drupal.t('Empty') }));
       return basic.join(', ');
     });
     $(context).find('#edit-email').drupalSetSummary(function (context) {
       var email = $(context).find('#edit-reply').val();
-      return Drupal.t('Auto-reply: @text', {'@text': email ? email.substring(0, 100) + '...' : Drupal.t('Empty')});
+      return Drupal.t('<strong>Auto-reply</strong>: @text', {'@text': email ? email.substring(0, 100) + '...' : Drupal.t('Empty')});
     });
     $(context).find('#edit-category').drupalSetSummary(function (context) {
       var category = [];
       var weight = $(context).find('#edit-weight').val();
-      var isDefault = $(context).find('#edit-selected').val();
-      category.push(Drupal.t('Weight: @weight', {'@weight' : weight }));
-      category.push(Drupal.t('Default category: @default', {'@default' : isDefault ? Drupal.t('Yes') : Drupal.t('No') }));
+      var isDefault = $(context).find('#edit-selected').attr('checked');
+      category.push(Drupal.t('<strong>Weight</strong>: @weight', {'@weight' : weight }));
+      category.push(Drupal.t('<strong>Default category</strong>: @default', {'@default' : isDefault ? Drupal.t('Yes') : Drupal.t('No') }));
       return category.join(', ');
     });
 
diff --git a/core/modules/menu/menu.js b/core/modules/menu/menu.js
index 67eda35..646e018 100644
--- a/core/modules/menu/menu.js
+++ b/core/modules/menu/menu.js
@@ -17,7 +17,7 @@ Drupal.behaviors.menuDetailsSummaries = {
     // Meta summeries for higher level form structure.
     $(context).find('#edit-basic').drupalSetSummary(function (context) {
       var title = $(context).find('#edit-label').val();
-      return Drupal.t('Title: @title', {'@title' : title ? title : Drupal.t('Empty') });
+      return Drupal.t('<strong>Title</strong>: @title', {'@title' : title ? title : Drupal.t('Empty') });
     });
     $(context).find('#edit-items').drupalSetSummary(function (context) {
       var links = $(context).find('.form-checkbox').length;
diff --git a/core/modules/overlay/overlay-child-rtl.css b/core/modules/overlay/overlay-child-rtl.css
index ef92595..f10e678 100644
--- a/core/modules/overlay/overlay-child-rtl.css
+++ b/core/modules/overlay/overlay-child-rtl.css
@@ -32,6 +32,6 @@ html {
  * Summary and detail interactions.
  */
 #overlay form > div > details > .details-wrapper {
-  padding-left: 0;
-  padding-right: 50px;
+  margin-left: 0;
+  margin-right: 50px;
 }
diff --git a/core/modules/overlay/overlay-child.css b/core/modules/overlay/overlay-child.css
index 2cd19fa..25d9a52 100644
--- a/core/modules/overlay/overlay-child.css
+++ b/core/modules/overlay/overlay-child.css
@@ -174,21 +174,28 @@ summary::-webkit-details-marker {
 }
 #overlay form > div > details > summary a {
   background: transparent url(images/pencil_sprite.png) no-repeat;
+  background-position: 0 -31px;
   padding: 0 30px;
+  color: #919191;
 }
-#overlay form > div > details > .details-wrapper {
-  padding-left: 50px; /* LTR */
+#overlay form > div > details > summary .summary {
+  display: block;
+  padding: 10px 30px;
+  color: #919191;
 }
-#overlay form > div > details[open] > .details-wrapper,
-#overlay form > div > details[open] > summary {
-  background-color: #f5f5f5;
+#overlay form > div > details[open] > summary a {
+  color: #0074bd;
+}
+#overlay form > div > details > .details-wrapper {
+  margin-left: 50px; /* LTR */
+  padding-left: 0;
+  border-bottom: 1px solid #cdcdcd;
 }
 #overlay form > div > details[open] > summary .summary {
   display: none;
 }
 #overlay form > div > details[open] > summary a {
-  background-position: 0 -31px;
-  color: #555;
+  background-position: 0 0;
 }
 #overlay .form-actions {
   margin-top: 2em;