We need to specify a custom template for download pages. Make a copy of the template file "page.tpl.php" and rename it to "page-<node_type>.tpl.php," where <node-type> is the name we gave to the node type when we created the content type. In our case, we would name the file page-download.tpl.php.
Open the new file in a text editor. Around line 69 (just after the mission) add a new line and add
<div id="downloads-page">
I close the div after the rss icon is displayed (but you might want to enclose more/less within the div) by adding
</div>
around line 80. This will let us theme the entire page that the node appears in, from buttons that appear at the top of the page when a download node is displayed to the footer.