This tutorial shows you how to customize your Elementary OS top panel, including background color and transparency, auto hide panel, and show or hide Applications launcher. To get started, press Ctrl+Alt+T on your keyboard to open terminal. When it opens, run command to edit the /usr/share/themes/elementary/gtk-3.0/app.css: sudo scratch-text-editor /usr/share/themes/elementary/gtk-3.0/apps.css There you can change the value… Continue reading How to Customize the Top Panel in Elementary OS Luna