I'm pretty new to the monstercommerce solution and even newer to the forums!
I have a question about borders on the page. Currently, I am using the MC_Steel template and I am in the stage of modifying it to my liking. I would like to add a border around just the right and left side of the main page including the body and the footer, but not including the header (the border will be taken care of in the image file).
Here is a quick screenshot plus a description of what I'm talking about:

I know that this is possible to do with a .css file. I have the code right here:
CODE
Boder_Left {border-left: 1px solid #333333;}
Border_Right {border-right: 1px solid #333333;}
How would I be able to apply this to the whole webpage?
Thank you for your help!