This little guide will show you how you can restore the Firefox address bar functionality to what it roughly was in version 47.In the shot below I've selected the Firefox 1 icon set. For example, you can select buttons from Firefox 1, 2, 3, Firefox Ubuntu, Firefox Mac OS X etc. From that list you can select a variety of alternative icon styles from various Firefox versions. To customize the buttons on the Firefox toolbar, select the Main icons style drop-down list.