diff --git a/core/core.libraries.yml b/core/core.libraries.yml
index a6d963c..afc83f6 100644
--- a/core/core.libraries.yml
+++ b/core/core.libraries.yml
@@ -47,9 +47,15 @@ drupal:
   js:
     misc/drupal.js: { weight: -18 }
   dependencies:
+    - core/drupal-init
     - core/domready
     - core/drupalSettings
 
+drupal-init:
+  version: VERSION
+  js:
+    misc/drupal-init.js: { weight: -19 }
+
 drupalSettings:
   version: VERSION
   drupalSettings:
diff --git a/core/misc/drupal-init.js b/core/misc/drupal-init.js
new file mode 100644
index 0000000..45725c4
--- /dev/null
+++ b/core/misc/drupal-init.js
@@ -0,0 +1,23 @@
+/**
+ * @file
+ *
+ * Base framework for Drupal-specific JavaScript, behaviors.
+ */
+(function (window) {
+
+  "use strict";
+
+  window.Drupal = { behaviors: {}, locale: {} };
+
+  // Allows users to turn off animations.
+  var noAnimate = localStorage.getItem('Drupal.noAnimate') === 'true';
+  // Class indicating that JS is enabled; used for styling purpose.
+  document.documentElement.className += ' js' + (noAnimate ? ' no-animate' : '');
+
+  // Allow other JavaScript libraries to use $.
+  if (window.jQuery) {
+    jQuery.noConflict();
+    jQuery.fx.off = noAnimate;
+  }
+
+})(window);
diff --git a/core/misc/drupal.js b/core/misc/drupal.js
index 61d3299..312bef5 100644
--- a/core/misc/drupal.js
+++ b/core/misc/drupal.js
@@ -1,5 +1,7 @@
 /**
- * Base framework for Drupal-specific JavaScript, behaviors, and settings.
+ * @file
+ *
+ * Drupal object API.
  */
 window.Drupal = {behaviors: {}};
 
diff --git a/core/modules/system/css/system.module.css b/core/modules/system/css/system.module.css
index 9eb87dc..a641cf1 100644
--- a/core/modules/system/css/system.module.css
+++ b/core/modules/system/css/system.module.css
@@ -4,6 +4,14 @@
  */
 
 /**
+ * Accessibility styling.
+ */
+.no-animate * {
+  -webkit-transition: none !important;
+  transition: none !important;
+}
+
+/**
  * Autocomplete.
  *
  * @see autocomplete.js