diff --git a/app/code/Magento/Backend/Block/Widget/Grid/Column/Renderer/Checkbox.php b/app/code/Magento/Backend/Block/Widget/Grid/Column/Renderer/Checkbox.php
index 3329f8aaf93c6b5d9a813f06de710f75634eb939..ec10318fd59913fcf938c896d4033c601668360b 100644
--- a/app/code/Magento/Backend/Block/Widget/Grid/Column/Renderer/Checkbox.php
+++ b/app/code/Magento/Backend/Block/Widget/Grid/Column/Renderer/Checkbox.php
@@ -116,15 +116,18 @@ class Checkbox extends \Magento\Backend\Block\Widget\Grid\Column\Renderer\Abstra
      */
     protected function _getCheckboxHtml($value, $checked)
     {
-        $html = '<input type="checkbox" ';
+        $html = '<label class="data-grid-checkbox-cell-inner" ';
+        $html .= ' for="id_' . $this->escapeHtml($value) . '">';
+        $html .= '<input type="checkbox" ';
         $html .= 'name="' . $this->getColumn()->getFieldName() . '" ';
         $html .= 'value="' . $this->escapeHtml($value) . '" ';
+        $html .= 'id="id_' . $this->escapeHtml($value) . '" ';
         $html .= 'class="' .
             ($this->getColumn()->getInlineCss() ? $this->getColumn()->getInlineCss() : 'checkbox') .
-            ' admin__control-checkbox' .
-            '"';
+            ' admin__control-checkbox' . '"';
         $html .= $checked . $this->getDisabled() . '/>';
-        $html .= '<label></label>';
+        $html .= '<label for="id_' . $this->escapeHtml($value) . '"></label>';
+        $html .= '</label>';
         /* ToDo UI: add class="admin__field-label" after some refactoring _fields.less */
         return $html;
     }
diff --git a/app/code/Magento/ImportExport/Block/Adminhtml/Export/Filter.php b/app/code/Magento/ImportExport/Block/Adminhtml/Export/Filter.php
index 4cd75e3313d2cee2f4185bfe5b734235e6205dfc..6dca0a90a8c32d5dd42af32eaccb3a4dc1d74a38 100644
--- a/app/code/Magento/ImportExport/Block/Adminhtml/Export/Filter.php
+++ b/app/code/Magento/ImportExport/Block/Adminhtml/Export/Filter.php
@@ -120,7 +120,7 @@ class Filter extends \Magento\Backend\Block\Widget\Grid\Extended
     {
         $html = '<input type="text" name="' . $this->getFilterElementName(
             $attribute->getAttributeCode()
-        ) . '" class="input-text input-text-export-filter"';
+        ) . '" class="admin__control-text input-text input-text-export-filter"';
         if ($value) {
             $html .= ' value="' . $this->escapeHtml($value) . '"';
         }
@@ -190,7 +190,7 @@ class Filter extends \Magento\Backend\Block\Widget\Grid\Extended
         ':</strong>&nbsp;' .
         '<input type="text" name="' .
         $name .
-        '[]" class="input-text input-text-range"' .
+        '[]" class="admin__control-text input-text input-text-range"' .
         ' value="' .
         $fromValue .
         '"/>&nbsp;' .
@@ -200,7 +200,7 @@ class Filter extends \Magento\Backend\Block\Widget\Grid\Extended
         ) .
         ':</strong>&nbsp;<input type="text" name="' .
         $name .
-        '[]" class="input-text input-text-range" value="' .
+        '[]" class="admin__control-text input-text input-text-range" value="' .
         $toValue .
         '" />';
     }
@@ -236,7 +236,7 @@ class Filter extends \Magento\Backend\Block\Widget\Grid\Extended
             $arguments = [
                 'name' => $this->getFilterElementName($attribute->getAttributeCode()),
                 'id' => $this->getFilterElementId($attribute->getAttributeCode()),
-                'class' => 'select select-export-filter',
+                'class' => 'admin__control-select select select-export-filter',
             ];
             /** @var $selectBlock \Magento\Framework\View\Element\Html\Select */
             $selectBlock = $this->_layout->createBlock(
diff --git a/app/code/Magento/ImportExport/view/adminhtml/templates/export/form/after.phtml b/app/code/Magento/ImportExport/view/adminhtml/templates/export/form/after.phtml
index ace41a768af027afaabce0a4877678e5d10abe8c..929fcf56bb537acede9cc11cf5c57ba57f292b2f 100644
--- a/app/code/Magento/ImportExport/view/adminhtml/templates/export/form/after.phtml
+++ b/app/code/Magento/ImportExport/view/adminhtml/templates/export/form/after.phtml
@@ -6,8 +6,8 @@
 
 // @codingStandardsIgnoreFile
 ?>
-<fieldset class="fieldset" id="export_filter_container" style="display:none;">
-    <legend class="legend">
+<fieldset class="admin__fieldset" id="export_filter_container" style="display:none;">
+    <legend class="admin__legend">
         <span><?php /* @escapeNotVerified */ echo __('Entity Attributes'); ?></span>
     </legend>
     <br />
diff --git a/app/code/Magento/Integration/Block/Adminhtml/Integration/Tokens.php b/app/code/Magento/Integration/Block/Adminhtml/Integration/Tokens.php
index e8654ef4fd3d3eded0d52557415294199801a8aa..f48a5e033b93f3845b7794b4e12d4f8ad2acd5f2 100644
--- a/app/code/Magento/Integration/Block/Adminhtml/Integration/Tokens.php
+++ b/app/code/Magento/Integration/Block/Adminhtml/Integration/Tokens.php
@@ -37,7 +37,7 @@ class Tokens extends \Magento\Backend\Block\Widget\Form\Generic
 
         $fieldset = $form->addFieldset(
             'base_fieldset',
-            ['legend' => __('Integration Tokens for Extensions'), 'class' => 'fieldset-wide']
+            ['legend' => __('Integration Tokens for Extensions'), 'class' => ' fieldset-wide']
         );
 
         foreach ($this->getFormFields() as $field) {
diff --git a/app/code/Magento/Integration/view/adminhtml/templates/integration/activate/permissions/tab/webapi.phtml b/app/code/Magento/Integration/view/adminhtml/templates/integration/activate/permissions/tab/webapi.phtml
index 52539a96e184a358ebfab50ff4f22df118ddd8c3..ba9ed08ce44b9a1d6b3a5fb4eb686d0cc05cc1ad 100644
--- a/app/code/Magento/Integration/view/adminhtml/templates/integration/activate/permissions/tab/webapi.phtml
+++ b/app/code/Magento/Integration/view/adminhtml/templates/integration/activate/permissions/tab/webapi.phtml
@@ -11,7 +11,7 @@
 // @codingStandardsIgnoreFile
 
 ?>
-<fieldset class="fieldset form-inline entry-edit">
+<fieldset class="admin__fieldset form-inline entry-edit">
     <?php if ($block->isTreeEmpty()): ?>
         <p class="empty"><?php /* @escapeNotVerified */ echo __('No permissions requested'); ?></p>
     <?php else: ?>
diff --git a/app/design/adminhtml/Magento/backend/web/css/styles-old.less b/app/design/adminhtml/Magento/backend/web/css/styles-old.less
index 7390b3177b8360a5f41fd5cdfe839e1cbf56fa1c..9f624fea87ed90b28856fa0be9b5632e31471ea3 100644
--- a/app/design/adminhtml/Magento/backend/web/css/styles-old.less
+++ b/app/design/adminhtml/Magento/backend/web/css/styles-old.less
@@ -2640,8 +2640,8 @@
     }
 
     //
-//      Configuration -> Design
-//  --------------------------------------
+    //      Configuration -> Design
+    //  --------------------------------------
 
     #row_design_theme_ua_regexp .design_theme_ua_regexp {
         float: left;
@@ -2654,6 +2654,16 @@
         clear: both;
     }
 
+    //
+    //      Configuration -> Advanced -> System -> Notifications section
+    //  --------------------------------------
+
+    #row_system_adminnotification_last_update {
+        .value {
+            vertical-align: bottom;
+        }
+    }
+
     //
     //  CMS -> Banners
     //  --------------------------------------