Blog Padding – Increasing Margins

Hello,

I would like to know if there is an easy way to increase the padding within my blog. Specifically, on the right side on pages like this:

http://omarramirez.net/blog/

Currently, the copy of my posts tends to butt up too closely along the right whenever I utilize a sidebar. I would like to increase the padding to correct it, and I was hoping there would be an easy way to do it with quick css.

thanks!
Omar