ChromeOS Gaia: Polishing Offline UI and Password changed UI according to specs

chrome/browser/resources/chromeos/login/gaia_card.html

 <link rel="import" href="chrome://resources/polymer/polymer/polymer.html">
 <link rel="import" href="chrome://resources/polymer/polymer/layout.html">
 <link rel="import" href="chrome://resources/polymer/paper-progress/paper-progress.html">
 
 <!--
   Simple Gaia card which should be used for local UI elements that look like
   GAIA. It has blue header and grey footer.
 
   Example:
     <gaia-card>
       <div class="header" flex vertical layout end-justified start>
         ...
       </div>
       <gaia-input-form class="footer" ...>
       </gaia-input-form>
     </gaia-card>
 
   Add class |header| to all which you want to go inside blue header.  Similar
   with class |footer|.
 -->
 <polymer-element name="gaia-card" noscript vertical layout>
   <template>
     <link rel="stylesheet" href="gaia_card.css">
     <div class="gaia-header" vertical layout>
-      <div class="side-padding top-padding" flex vertical layout>
+      <div class="header-container" flex vertical layout>
         <content select=".header"></content>
       </div>
     </div>
     <paper-progress id="progress-bar" indeterminate></paper-progress>
     <div class="gaia-footer" flex vertical layout>
-      <div class="side-padding bottom-padding" flex vertical layout>
+      <div class="footer-container" flex vertical layout>
         <content select=".footer"></content>
       </div>
       <div id="bottom-overlay">
       </div>
     </div>
   </template>
 </polymer-element>