Forum width doesn't change

[B-e-e]

Technical Details

Forum version : #phpBB3
Position : Founder
Concerned browser(s) : Safari
Who the problem concerns : Yourself
Forum link : http://mewsdistantrealm.forumotion.com

Description of problem

I understand that in order to change the width of the forum, you go to Administration Panel > General > Forum >Configuration and then scroll down and adjust the width by %. I have done this a few times and it worked. But since then I have been fiddling around with the HTML of the site with my limited knowledge, and now the page width changer doesn't work anymore. I can't figure out how to fix it, either.

[SLGray]

Yes, you are correct, unless the theme designer changed it in the CSS stylesheet.