anchor.diff:                <tr>
                   <td>
                     <p><img src="http://cdn.factlink.com/1/emailheader.png" /></p>
  -                  <%= yield :email_body %>       
  +                  <%= yield :email_body %>   
                   </td>
                 </tr>
               </table>
  
positive.code:       }
  
        img { 
          max-width: 100%; 
        }
  
        body {
  
negative.code: 
        .content {
          background: #FFFFFF;
          padding:30px;
          max-width:600px;
          margin:30px auto;
          display:block;
          border: 1px solid #cbcbcb;
          -moz-border-radius: 4px;
          -webkit-border-radius: 4px;
          border-radius: 4px;
          -moz-background-clip: padding;
          -webkit-background-clip: padding-box;
          background-clip: padding-box;
          background-color: #fff;
          -moz-box-shadow: 0 1px 3px rgba(0,0,0,.1);
          -webkit-box-shadow: 0 1px 3px rgba(0,0,0,.1);
          box-shadow: 0 1px 3px rgba(0,0,0,.1); 
        }
  
        .content table { width: 100%; }
  