diff --git a/core/modules/block/css/block.admin.css b/core/modules/block/css/block.admin.css
index d9f32a2..3354afe 100644
--- a/core/modules/block/css/block.admin.css
+++ b/core/modules/block/css/block.admin.css
@@ -1,3 +1,4 @@
+/* Block demo mode */
 .block-region {
   background-color: #ff6;
   margin-top: 4px;
@@ -21,88 +22,10 @@ a.block-demo-backlink:visited {
 a.block-demo-backlink:hover {
   text-decoration: underline;
 }
-
-.layout-region {
-  box-sizing: border-box;
-}
-.block-list-secondary {
-  border: 1px solid #bfbfbf;
-  border-bottom-width: 0;
-}
-.block-list {
-  padding: 0 0.75em;
-  margin: 0;
-}
-.block-list li {
-  list-style: none;
-  padding: 0.1em 0;
-}
-.block-list a:before {
-  content: '+ ';
-}
-.block-list-secondary .form-type-search {
-  padding: 0 1em;
-}
+/* Configure block form - Block description */
 .block-form .form-item-settings-admin-label label {
   display: inline;
 }
 .block-form .form-item-settings-admin-label label:after {
   content: ':';
-}
-
-/* Wide screens */
-@media
-screen and (min-width: 780px),
-(orientation: landscape) and (min-device-height: 780px) {
-
-  .block-list-primary {
-    float: left; /* LTR */
-    width: 75%;
-    padding-right: 2em;
-  }
-  [dir="rtl"] .block-list-primary {
-    float: right;
-    padding-left: 2em;
-    padding-right: 0;
-  }
-
-  .block-list-secondary {
-    float: right; /* LTR */
-    width: 25%;
-  }
-  [dir="rtl"] .block-list-secondary {
-    float: left;
-  }
-
-  /* @todo File an issue to add a standard class to all text-like inputs */
-  .block-list-secondary .form-autocomplete,
-  .block-list-secondary .form-text,
-  .block-list-secondary .form-tel,
-  .block-list-secondary .form-email,
-  .block-list-secondary .form-url,
-  .block-list-secondary .form-search,
-  .block-list-secondary .form-number,
-  .block-list-secondary .form-color,
-  .block-list-secondary textarea {
-    box-sizing:         border-box;
-    width: 100%;
-    max-width: 100%;
-  }
-}
-
-/**
- * The vertical toolbar mode gets triggered for narrow screens, which throws off
- * the intent of media queries written for the viewport width. When the vertical
- * toolbar is on, we need to suppress layout for the original media width + the
- * toolbar width (240px). In this case, 240px + 780px.
- */
-@media
-screen and (max-width: 1020px) {
-
-  .toolbar-vertical.toolbar-tray-open .block-list-primary,
-  .toolbar-vertical.toolbar-tray-open .block-list-secondary {
-    float: none;
-    width: auto;
-    padding-right: 0;
-  }
-}
+}
\ No newline at end of file
diff --git a/core/modules/block/src/Controller/BlockListController.php b/core/modules/block/src/Controller/BlockListController.php
index b446799..8533f8f 100644
--- a/core/modules/block/src/Controller/BlockListController.php
+++ b/core/modules/block/src/Controller/BlockListController.php
@@ -129,14 +129,14 @@ public function layout($theme) {
 
     $build['filter'] = array(
       '#type' => 'search',
-      '#title' =>$this->t('Filter'),
+      '#title' => $this->t('Filter'),
       '#title_display' => 'invisible',
       '#size' => 30,
-      '#placeholder' =>$this->t('Filter by block name'),
+      '#placeholder' => $this->t('Filter by block name'),
       '#attributes' => [
         'class' => ['block-filter-text'],
         'data-element' => '.block-add-table',
-        'title' =>$this->t('Enter a part of the block name to filter by.'),
+        'title' => $this->t('Enter a part of the block name to filter by.'),
       ],
     );
 
@@ -144,7 +144,7 @@ public function layout($theme) {
       '#type' => 'table',
       '#header' => $headers,
       '#rows' => $rows,
-      '#empty' =>$this->t('No blocks available.'),
+      '#empty' => $this->t('No blocks available.'),
       '#attributes' => [
         'class' => ['block-add-table'],
       ],
diff --git a/core/modules/block/src/Tests/Views/DisplayBlockTest.php b/core/modules/block/src/Tests/Views/DisplayBlockTest.php
index 585f02d..31ed059 100644
--- a/core/modules/block/src/Tests/Views/DisplayBlockTest.php
+++ b/core/modules/block/src/Tests/Views/DisplayBlockTest.php
@@ -58,7 +58,7 @@ public function testBlockCategory() {
     $edit['block[style][row_plugin]'] = 'fields';
     $this->drupalPostForm('admin/structure/views/add', $edit, t('Save and edit'));
 
-    $pattern = '//tr[.//td/div[text()=:text] and .//td[text()=:category] and .//td/div/div/ul/li/a[contains(@href, :href)]]';
+    $pattern = '//tr[.//td[text()=:category] and .//td/div/div/ul/li/a[contains(@href, :href)]]';
 
     // Test that the block was given a default category corresponding to its
     // base table.