Ultimo is optimized for all screen resolutions. If you resize web browser window, theme elements will be transformed smoothly on each breakpoint (from 240 to 1680 pixels) in order to adapt to the current screen size. Width of the page is fluid – theme uses 100% of available space (below specified maximum width) to display content [demo3]. But you can also disable fluid width – in that case page width will change on breakpoints and will not take entire available space.