I just set a max width for my forum and i set the page width but the forum is on the left and this space of the right.
I added this to the miscellaneous field
margin: 0 auto;
I replaced width with max-width.
everything as showed here http://xenforo.com/community/threads/frequently-asked-questions.5183/#post-181037.
I want it to be centered but can't get it to work.
Thanks for your assistance.