Our sites rely on Cascading Style Sheets (CSS) to handle most of the text formatting for a specific website. The benefits of CSS are many, but the main one would be that if you want to change a font size or color in six months, you can just update the CSS file (size: 12px; to size:14px) and all of the text that uses that style is updated through the site. Very, very convienant.
The downside is that we spend a lot of time in support chasing down CSS issues. Sometimes, style classes conflict with one another, of they look right in Internet Explorer but look funky in FireFox. Well I found the cool, free online tool that helps out a lot.
All you do it paste your CSS file into one window and click "Process CSS". It cleans it, make it compliant, lists any issues with it and reduces it's file size to boot. I've used it about ten times to solve some gremlin CSS issues and it works like a charm.