If you blog about computers and often show keyboard hotkeys for programs in your post, you can stylize those keyboard keys by using the KEYS.css stylesheet.
Just add the stylesheet to your web pages and wrap the letters with the already defined <kbd> tag for HTML. This will transform the wrapped text into keyboard styled elements. There are 2 styles provided, light and dark and the styled letters fit to any font size automatically.
KEYS.css uses CSS3 properties, so it will work on modern browsers and degrades gracefully for older browsers.
I have found that KEYS.css works best on Firefox and Opera, both producing identical results (the above screenshots were taken on Firefox). On Chrome 7, and possibly all Webkit based browsers, it produces a slightly less than desirable output.
Old, non-supported browsers degrades to this.