Add body css for remoting session page

remoting/webapp/me2mom/main.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.
  */
 
 body {
   font-family: Helvetica, sans-serif;
   cursor: default;
   font-size: 13px;
 }
@@ skipping 28 matching lines @@
   background-color: lightgray;
   display: inline-block;
 }
 
 .hostlist {
   margin: 0;
   border: #D9D9D9 1px solid;
   border-radius: 2px;
 }
 
+.remoting_body {
+  -webkit-user-select: none;
+  margin: 0;
+  padding: 0;
+  overflow: auto;
+}
+
 .status_msg {
   margin: 5px;
 }
 
 .debug_log {
   -webkit-user-select: text;
   padding: 0px;
   margin: 0px;
   position: fixed;
   bottom: 0px;
@@ skipping 106 matching lines @@
   background: #ebebeb -webkit-linear-gradient(#f4f4f4, #efefef 40%, #dcdcdc);
   color: #333;
 }
 
 button[disabled], button[disabled]:hover {
   -webkit-box-shadow: none;
   background: -webkit-linear-gradient(#fafafa, #f4f4f4 40%, #e5e5e5);
   border-color: #aaa;
   color: #888;
 }