screen resolution and margin

can anyone tell me how i go about correcting the margin issue i have when i change screen resolution ie when on my laptop the resolution is 1366x768 and my forum looks the way i want it everything centered but when i go on my desktop my monitor resolution is 1600x900 and my forum is off center with the right hand margin being a lot bigger than the left see screen shoot
when i change the "margin-left" it works on my desktop monitor but when i switch to my laptop the margin is then messed up on that resolution.

Hi,

Are you trying to center the board itself? Can you please provide your forum URL? Thanks.

not sure if it the board i want to center just want it so no matter what resolution my screen is the margins left and right to my forums body are equal thanks.
http://forzalegends.playogame.com/

Try this,

Code:

#wrap {
padding: 5px;
border: 1px solid #ff0000;
-moz-border-radius: 5px;
-webkit-border-radius: 5px;
-moz-box-shadow: 0 0 5px #d1c5c5;
-webkit-box-shadow: 0 0 5px #ff0000;
margin-left: 180px;
}

Inside your CSS: ACP >> Display >> Colors >> CSS (tab)

cheers bud put the code in had to change margin-left to 140px to center the forum on my desktop monitor but when i went on my laptop there is now a big margin on the left and no margin to the right

managed to sort it myself with this coding

Code:

body{margin-right: auto;
margin-left: auto;
  max-width:1350px;
}
#wrap {margin-left:auto;
margin-right:auto;
width:1290px;
}

now no matter what resolution the screen im viewing my forum on everything is centered please mark as solved