Experimenting with Relative Font Sizes
Styling with em
Text display size is easily changed when using relative font sizes. Your visitors will be happy, especially the ones that need to set their browsers to a larger display.
Change Your Browser Text Size
Internet Explorer and Firefox users, choose View>Text Size. Opera users choose View>Zoom. Change your settings to larger and smaller displays. The text size should resize accordingly.
How does this page look in your browser? Take a look at the source code.