Find all CSS styles used on website

Question

I have a DotNetNuke skin that has a single CSS file over 3,500 lines long. It contains styles for YUI, Telerik, Cluetip as well as the actual customisation of the site. The old

Answer 1

For firefox there is an add-in called dust-me-selectors. If you provide a sitemap, it will find all unused css styles.

Answer 2

If you run dust-me-selectors, remember to run it in every page of your website so you don't delete any styles that are actually used.