MyBB Community Forums

How do I set the page content width?
I have added some of my own pages to MyBB but some must not be that wide.

.css
#container width does not work
.wrapper does not work
They decrease the whole pages width

html
<table width=x> does not work
<div width=x> does not work

This is what I mean:

most probably that is #content width. can we have your forum url ..

for me, #content pushes the whole site to the left

Though if I change #content background it indeed is that section

Edit:
I got. I did it with 
#page {
width: 600px;
}