Hello there! My site at w ww.airsoftica.com is acting a little bit funny. There's a horizontal scroll bar on the browser (if you're running at 1024x768) that really shouldn't be there. I've been looking for the rogue code but I cannot find it for the life of me! Anyone who is familiar with CSS and html could really give me a hand. Thanks!
Start by bringing the width of your wrapper down a few pixels... Try have a look with firebug and see what you find, I am not on that resolution so I cannot help too much...
wrapper mainly keeps your site together, allowing the site to be moved left or right... Give a wrapper a width and set its margin to auto will centre... there are other things it is used for but thats one of the main reasons lol...
Wrappers are mostly used to when you have layers and you want to give them a location such as centering. Using that to center means that it will stay in the middle of the screen for all resolution.