[gb2world]

Just to clarify a bit to avoid any confusion:
Firebug is a separate tool from the consoles popped up by Webmaster mode. In your image, you have a Firebug session open on the Webmaster mode console. That Firebug session applies to the console, not to the page under debug, so it is likely not very helpful, and is not describing css on the page under debug.

The Webmaster mode tool's console allows you to trace templates and view smarty variable settings on the page in question, but does not help much with debugging CSS and javascript. That is where a tool like Firebug or other similar inspection tools on different browsers come into play.

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