Did your eyes sick when see the icon on the Application shortcut on Gnome3 shell is too big? I feel it. Then I googling around and found the tutorial that we can edit some setting on the Gnome3 shell. By using 'gedit' software we need to edit some parameter in the 'gnome-shell.css' file. In this case we only need to change some value that related to the icon size. If you interested to try, you
