Padding to the right side of row

Padding to the right side of row

I am working on a design with twitter bootstrap 2 (responsive). In this
design, I have a header, left sidebar, content and footer.
Basically, I have the following code structure - have a look at
http://jsfiddle.net/w4yh9/3/
The important section is the:
<div id="inner" class="span10">
...
</div>
Please have a look at the attached screenshot, especially the yellow
marked area:

I have the following question / problem: How can I add some padding to the
right for all content elements (success message, content, table) - it
should work on smaller screens as well?