How to Fix Thin Scrollbars in Gnome 3

If your scrollbars are too thin in Gnome 3, this is worth a try.

1  Open a terminal.
2  Go to ~/.config/gtk-3.0/
3  Open the gtk.css file for editing. Create this file if it doesn’t exist.
4  Add the following text to the gtk.css file:

.scrollbar.vertical slider,
scrollbar.vertical slider {
min-width: 15px;
}

5  Save the  gtk.css file and log out and back in to Gnome.
6  When you log back in, you should see the scrollbars on apps like the Firefox browser and terminals changed to the value you entered in the gtk.css file.

You may have to tinker with the min-width to get the scrollbar thickness you want but hopefully this resolves your problem. Thanks to the folks on this ubuntuforums thread for the answer.

My environment is CentOS 7 and Gnome Shell 3.25.4, but this problem seems to be more generally related to Gnome 3.

If you want to know your Gnome Shell version, the easiest way to find it is to open a terminal and type gnome-shell –version.

If this doesn’t resolve your issue, I’d like to hear about your situation. I understand if registering to comment is too much work though … 🙂