We am currently experimenting with a forum design with an all left sidebar of 320px in width and a main part of 660px For my last tweak I need your help as I am not sure if I am doing the right thing. What I'd like to achieve is to align the fixed width layout a tiny bit left from the center (the normal fixed width position like here on XF.com). Lets say a bit like Facebook does it: the left sidebar is present yet the focus of the user is still on the center of the screen where the main part is. I can re-create the effect by adding 18% to the left margin of the page width controller or around 25% to the right. Is this the correct way of doing this?