When it comes to Web development there is no equal to the love you get from the Firefox community. I dare you to find a better browser that is suited for editing layouts and getting things just right. The only problem comes in when it comes to making everything look good in Internet Explorer as well. It is like living in a dream, and then waking up to find a nightmare.
No matter how much it scares you that most of the world is still using Internet Explorer, I have found five extensions that will make the pain go away.