This is especially a problem for pages built by graphic artists using a Macintosh, whose standard screen size is 1024x768. If you've built your Web page this way on a computer with an 800-pixel screen, you may be surprised how your page is stretched to fit a larger screen. Text and graphics that were adjacent on your smaller screen may not be so on a large screen. To avoid this, wrap the content of your page inside a single, large, one-cell table. Because the majority of Internet users have a screen resolution of 800 pixels or less, it's a bad idea to design your site for a larger screen.
Most browsers allow users to customize their default font size.
Many users who work on computers all day do this to reduce eye strain. This increase in font size can hurt many carefully-planned page designs. Our newsletter archive has several informative stories on how font size can affect your pages. Your Page and another article gives you tips on Fixing Your Font Sizes . We've tested over 32 million Web pages at NetMechanic.