I am building a site based on the 960 grid system. Since I'm still pretty new with Drupal, instead of using the Zen 960 theme, I chose to update the 960 Robots theme. Well I feel the main content area on the 960 Robots theme is too wide so I would like to shave a column or two off of the right side. After doing some research, I found the Zen 960 theme uses "suffix-x" and "prefix-x" to do this. I used Firebug to test by adding the class "suffix-2" around the appropriate node and it didn't seem to work. I did the same thing when Zen 960 was my theme and it worked.

Does the 960 Robots theme utilize the suffix and prefix logic? If not, how do I work around this?