Conflict Resolution Monitors, computers, and video graphics cards work in tandem. As you may know, the lowest resolution in common use today is 640 pixels wide and 480 pixels high. Other resolutions include the very common 800x600, the popular 1024x768, and the luxurious 1600x1200. Ideally, Web designers have monitors that support a range of resolutions, so they can test the way pages will appear at various resolutions. I've already mentioned that the browser creates a visual constraint, but that's not all it does.
Web browsers eat up real estate.
The toolbars and status bar of a Web browser will take up a certain amount of the vertical space. The sidebar and scroll bar consume horizontal space. Yes, end users can customize the toolbars on a browser and gain space, but many Web visitors leave their browsers on the default settings, which sucks up the maximum space allowed. Some options for dealing with resolution concerns include designing to the most appropriate resolution for your audience, designing dynamically so your pages look good at any resolution, and using JavaScript and multiple design versions to accommodate as many visitors as possible. If so, you've improved your use of space.