Stop divs from collapsing

I have a main column and a right column. Problem is when you make the browser window smaller, the right column moves under the main column. How can I stop that from happening? Any help will be greatly appreciated.

This is the site in question:
http://www.jwebxpress.com/tools/snip/

You could set a min-width on the parent of the columns :).

Tried that. Doesn’t seem to do the trick :frowning:

Think I got it. I set the width for the right column to 38% and that seemed to work