Some Basic Design Considerations Screen Size You probably already know that it is possible to change the settings on your computer so that the screen will display data at different resolutions. Prior to that, screens were usually set to 640x480. Some higher powered computers can have resolutions that top 1200 pixels across. Your problem as a web designer is that you have no way of knowing the screen resolution being used by each of your visitors.
Many people never change the pixel depth of their computers, even if they know how.
As a result, the resolution is left at that depth. Normally, you would have to scroll left and right in addition to up and down. The bottom line is that you have to decide the resolution to which you are going to design your page. The chart below should give you some basic guidelines. You probably already know that the font you use in your design of a web page must also exist on the computer viewing your page.