How do I increase the Debian window header button size?

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debian raspberry-pi gui gtk user-interface

                          I made a DIY DAB radio using a Raspberry Pi 5 and a 7-inch 1024x600px HDMI screen, running Raspberry Pi OS (Debian 12).

The problem is, that the header buttons of each window is too small for operation reliable using the touchscreen.

I tried the following

 - gsettings get org.gnome.desktop.interface gtk-theme returns 'PiXnoir'
 - nano /usr/share/themes/PiXnoir/gtk-3.0/gtk.css shows @import url("../../PiXflat/gtk-3.0/gtk-contained.css");
 - therefore I modified nano /usr/share/themes/PiXflat/gtk-3.0/gtk-contained.css
 - I modified the following parameter:

But that did not change the header size at all.

How can I enlarge the header buttons? What did I do wrong?

(If additional system informationa are required, please feel free to ask)

Asked by Florian (71 rep)

Mar 15, 2025, 08:52 PM

How do I increase the Debian window header button size?

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