A List Apart has published the results of a very extensive test to determine the most effective way to size text on web pages but still be reliably resized in the broadest range of web browsers and operating systems.

In short, they found that:

Sizing text and line-height in ems, with a percentage specified on the body (and an optional caveat for Safari 2), was shown to provide accurate, resizable text across all browsers in common use today.

See the full article for more information and the complete methodology of the tests.

[A List Apart]

Tags: browsers, css, html and xhtml, layout, typography