Any tools to identify undefined CSS/HTML classes?

Question

Are there any tools out there that can look at my website HTML and tell me that (for example) "there is an HTML element at mysite.com/example.html using a class of SOMECLASS but SOMECLASS is not defined in any included CSS files".

?

Answer 1

You could try inspecting with Firebug

Answer 2

You could try out a soft like Dust-me-selectors: http://www.milienzo.com/2007/08/07/clean-up-your-css-with-firefox-plugin/