To edit CSS, I have to inspect elements in Firebug and then make changes in the Firefox Web Developer toolbar so that I can save the changes out to a separate CSS file.
It would be nice if I could forget about Firebug and just use a single tool. Does the Web Developer toolbar have an "Inspect Element" option? I can't seem to find one.
What this feature does is lets you hover your mouse over structural elements and inspect the associated CSS.