Firefox 3 has a really good look. But still some people don’t like some of its looks like the large sized ‘Back’ button. So, if you want to change its size and make it a small one, then just follow the steps given below.
1. Right-click on the Firefox toolbar and select ‘Customize’.
2. Then tick the ‘Use Small Icons’ button.
That’s it. Now the ‘Back’ button in Firefox will be displayed as a small one.