Use absolute positioning for notification area.

chrome/browser/resources/chromeos/login/oobe.css

 /* Copyright (c) 2012 The Chromium Authors. All rights reserved.
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  *
  * This is the stylesheet used by the Out of the box experience (OOBE) flow.
  */
 
 html,
 body {
   height: 100%;
@@ skipping 734 matching lines @@
   right: 10px;
   text-shadow: 0 1px 1px #fff;
 }
 
 #offline-network-control {
   margin-left: 60px;
 }
 
 #notification-area {
   color: #666;
-  height: 0;
-  margin: 8px auto;
-  max-width: 850px;
+  position: absolute;
   text-align: center;
+  top: 8px;
+  width: 100%;
 }
 
 #notification-area a {
   color: rgb(37, 79, 155);
 }
+
+#notification-area .butter-bar {
+  margin: 0 auto;
+  max-width: 850px;
+}