Specify multiple fonts - Since your visitors are going to be both Macintosh and Windows users, you should designate fonts commonly found on both platforms or at least one font common to each platform. The first font you specify should be the one that you feel is ideal for your design and the most legible. If the first font specified is not common on both platforms, the next font specified should be a similar typeface common for the opposite platform. Relative sizing - The flow of the text on a page varies from one machine to another and from one browser to another. This sometimes makes relative sizing a better choice than absolute sizing.
Relative sizing adjusts the font size relative to the normal screen display.
Large text may destroy your carefully laid out design. Methods of Control CSS - Cascading Style Sheets give the designer a great deal of control over all aspects of type. They are viewable on all fourth generation browsers and can be used to achieve exact font sizes , overriding the browser's font preferences. The use of appropriate fonts can enhance the the design of your Web page. When selecting a font for your site, remember that text can help convey a feeling or set a mood but ultimately it's purpose is to be read .