[WebUI] Fix all CSS nits in chrome/browser/resources/chromeos.

chrome/browser/resources/chromeos/mobile_dialogs.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.
+ */
+
 body {
   cursor: default;
   font-size: 13px;
 }
 
 .container {
   -webkit-box-align: center;
   -webkit-box-pack: center;
+  bottom: 0;
   display: -webkit-box;
+  left: 0;
   position: fixed;
-  left: 0;
-  bottom: 0;
   right: 0;
   top: 0;
 }
 
 .dialog {
   background: white;
   min-height: 225px;
   min-width: 350px;
   padding: 0;
   position: relative;
 }
 
 .dialog h1 {
   background: -webkit-linear-gradient(white, #F8F8F8);
   border-bottom: 1px solid rgba(188, 193, 208, .5);
-  color: #53637d;
+  color: rgb(83, 99, 125);
   font-size: 105%;
   font-weight: bold;
   margin: 0;
   padding: 10px 15px 8px 15px;
   text-shadow: white 0 1px 2px;
   width: 320px;
 }
 
 .content-area {
   padding: 10px 15px 5px 15px;
@@ skipping 18 matching lines @@
 
 .button-strip {
   -webkit-box-orient: horizontal;
   display: -webkit-box;
 }
 
 .button-strip > button {
   -webkit-margin-start: 10px;
   display: block;
 }