[cros] Fix OOBE image selection screen layout.

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

 /* Copyright (c) 2011 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 234 matching lines @@
 
 #logging div {
   display: table-cell;
   vertical-align: middle;
 }
 
 #usage-stats {
   -webkit-margin-end: 10px;
 }
 
+#user-image {
+  margin: 0 20px;
+}
+
 #user-image-grid {
   -webkit-user-drag: none;
   -webkit-user-select: none;
   display: inline-block;
   margin: 0;
   outline: none;
   padding: 0;
   width: 400px;
 }
 
@@ skipping 445 matching lines @@
   left: 10px;
   opacity: 1.0;
   position: absolute;
   right: 10px;
   text-shadow: 0 1px 1px #fff;
 }
 
 #offline-network-control {
   margin-left: 60px;
 }