It is no coincidence that Firefox is the default browser for most web developers. The reason is not just security or tabbed browsing. It has become an invaluable tool in web development, particularly on creating & debugging XHTML and CSS layouts.
If we have to measure the exact space available between columns on screen, or if we have to find the which block breaks the layout, we can find it right away with a few clicks. Firefox makes CSS bug tracking much simpler.


