By default, the forum uses a fixed width layout and the forum will be centered and take up a fixed amount screen real estate. Depending on your screen’s resolution, there may be empty space around the fixed content. On a screen with a resolution of 1920 * 1200 (e.g. 24 inch wide screen monitor), there will be a significant amount of empty space around the fixed content A fluid layout will adapt to the size of the screen and the forum will stretch across the entire screen. To change layouts, scroll to the bottom of the forum and click on the style link. Next click on the style you want to use.