Arcade page not centered

Hello, I just installed ibProArcade onto my vB 3.7.2 board. I'm using a skin that assumes a fixed position with roughly 4-6 cm margins left and right. The main table of the forum is almost 800px, and is centered across the screen. When I open the arcade.php page, the left margin appears unchanged, the main table of the forum is larger width-wise, and the right margin is shorter. Aesthetically, it doesn't look right. May I know how I can have web pages associated with ibProArcade look centered when accessed, given the type of skin I'm using?

Thanks.

EDIT: Nevermind. All I had to do is just change the width value under .side_borders for the particular skin to something larger, and now all looks centered and nice. Sorry for wasting a post