Not that I know of, but would it really be that difficult to type the out?
Don't worry about different platforms, only browsers matter for the Internet.
Download and test your website on the following browsers:
Mozilla Firefox 3
Safari Web Browser 3.1
Internet Explorer 7
Internet Explorer 8 Beta 2
Opera 9.5
Google Chrome
Between them, you'll cover every standard web browser family there is, leaving less than one tenth of a percent blind in the water.
Internet Explorer and firefox use slightly different syntaxes for HTML and CSS.
Check the W3Schools CSS reference to see what needs to be chnaged for Firefox.
It may still work in Internet Explorer, but if it doesn't, you'll need to make two separate style sheets and use JavaScript to load them respectively.
Again, it's the difference between the builds of the browsers
If it's that important to you, you could simply rebuild the page for Firefox