Background image disappears in notifier

Hi. I've been working on only html notifier as I read you can not use CSS styles. My surprise was that the notifier malfunctions again. When I click OK, the html code changes and also bg image disappears and the text styles. It's a shame because in the Blogger post test code works perfectly. Can you help me out? thanks in advance
PS. Attached html code and a picture of Blogger where I intend to send the notifier.

http://www.jotform.com//?formID=51681388927368

<table border="0" cellspacing="0" width="100%" bgcolor="#FFFFFF">
<tbody>
<tr>
<td heigth="30"></td>
<p>Esta es la postal de {de} para ti. </p>
</tr>
</tbody>
</table>
<table border="1" width="530" height="360"  background="https://lh3.googleusercontent.com/-6QpUIxJkanU/VbCQGPwxJII/AAAAAAAABR4/xfpYUmoUmss/s800-Ic42/PRUNUS-3.png" >
<tbody>
<tr >
<td width="50%" style="text-align: left;
    vertical-align: middle;
    border: 0px solid #000;
    padding-left: 30px;
    padding-rigth: 10px;
    text-indent: 20px;
    font-family: Calligraffitti;
    font-size: 14px;
    color: #ffffff;"><p>{dedicatoria}</p></td>
<td width="50%" style="text-align: left;
    vertical-align: middle;
    border: 0px solid #000;
    padding-left: 30px;
    padding-rigth: 10px;
    text-indent: 20px;
    font-family: Calligraffitti;
    font-size: 14px;
    color: #ffffff;"></td>
</tr>
</tbody>
</table>

I have added it for you. Kindly check on how to properly add the background image using inline image styling.

Thanks

Thanks for the help. I hope I can polish it so it looks like the sample I sent.