Product info page new border problem

Hello All,

I have a problem with my border of product info page. I need to create a new border just above the original left/right border.

I create div tags into the tpl_product_info_display.php

<div id="addImagecontTop">
<div id="addImagecountBottom">
<!--bof Additional Product Images -->
<?php
/**
 * display the products additional images
 */
  require($template->get_template_dir('/tpl_modules_additional_images.php',DIR_WS_TEMPLATE, $current_page_base,'templates'). '/tpl_modules_additional_images.php'); ?>
<!--eof Additional Product Images -->

</div>
</div>

Then I styled with my stylesheet.css:

#addImagecountTop, #addImagecountBottom {
    /*background-color: red;*/
    border-color: red;
    border-top: 60px;
    border-bottom: 60px;
    /*position: fixed;*/
    }

But nothing happened, there must be something I missing.... Here is one of my product info page link: http://www.oleklejbzon.com/campbellsloft3/index.php?main_page=product_info&cPath=2&products_id=4

I wanna make it looks like the attachment...

Thanks

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Other posting
http://www.zen-cart.com/forum/showthread.php?t=183918