MAGETWO-42256: Marketing Admin page lost its styles

Author: Natalia Momotenko

app/design/adminhtml/Magento/backend/web/css/source/forms/_controls.less

@@ -176,6 +176,15 @@ option:empty {
     }
 }
 
+//
+//  Service text or control. Can be used to add text or "Use Default Value" checkbox
+//  ---------------------------------------------
+
+.admin__control-service {
+    float: left;
+    margin: .8rem 0 0 3rem;
+}
+
 //
 //  Textarea
 //  ---------------------------------------------

lib/internal/Magento/Framework/Data/Form/Element/Checkboxes.php

@@ -194,20 +194,20 @@ protected function _optionToHtml($option)
     {
         $id = $this->getHtmlId() . '_' . $this->_escape($option['value']);
 
-        $html = '<div class="field choice"><input id="' . $id . '"';
+        $html = '<div class="field choice admin__field admin__field-option"><input id="' . $id . '"';
         foreach ($this->getHtmlAttributes() as $attribute) {
             if ($value = $this->getDataUsingMethod($attribute, $option['value'])) {
-                $html .= ' ' . $attribute . '="' . $value . '"';
+                $html .= ' ' . $attribute . '="' . $value . '" class="admin__control-checkbox"';
             }
         }
         $html .= ' value="' .
             $option['value'] .
             '" />' .
             ' <label for="' .
             $id .
-            '">' .
+            '" class="admin__field-label"><span>' .
             $option['label'] .
-            '</label></div>' .
+            '</span></label></div>' .
             "\n";
         return $html;
     }

lib/internal/Magento/Framework/Data/Form/Element/Note.php

@@ -39,7 +39,7 @@ public function getElementHtml()
         $html = $this->getBeforeElementHtml()
             . '<div id="'
             . $this->getHtmlId()
-            . '" class="control-value">'
+            . '" class="control-value admin__field-value">'
             . $this->getText()
             . '</div>'
             . $this->getAfterElementHtml();

lib/internal/Magento/Framework/Data/Test/Unit/Form/Element/NoteTest.php

@@ -63,7 +63,7 @@ public function testGetElementHtml()
         $this->_model->setValue('Note Text');
         $html = $this->_model->getElementHtml();
         $this->assertEquals(
-            "note_before<div id=\"note_id\" class=\"control-value\"></div>note_after",
+            "note_before<div id=\"note_id\" class=\"control-value admin__field-value\"></div>note_after",
             $html
         );
     }