If you visit my site, click on the top link that says Preferences. It'll take you to the script I wrote where you can select from one of three themes. The default theme is the Chess theme.

I design a bit differently because I use PHP to create dynamic CSS so it can accept variables from POST data from my preferences script. Right now it's just shoved into the header because I did a quick fix to deal with the PHP5 update.

In my development area, it's coded differently and that'll be rolled out pretty soon. I use one CSS file for structure and then the styles are each in their own css file.

I can generally get all browsers to display the design pretty much the same way without having to add any special tweaks.

If you want to see what your site looks like in other browsers you can use totalvalidator.com and select from lots of different browsers and it'll do a screen cap and display it to you so you can see what browsers are having issues.

Most of my traffic uses FF, Opera, and IE. I have some traffic using safari, and linux though not nearly as many as the other browsers I've mentioned.