Theming volume slider: GtkScale handle/knob thing

[ToxicMushroom]

I've been struggling to find how to theme the white square that indicated where to grab and the position of the GtkScale
The https://docs.gtk.org/gtk3/class.Scale.html docs don't seem to mention it ?

[JakeStanger]

Hey, that can be targeted using the GTK slider element as the selector. Specifically, the full selector would be:

.popup-volume .apps-box .app-box .slider slider

[ToxicMushroom]

Thanks it appears that it is a background-image.
Would you have any clue as to why it'd display as a square by default
I tried changing themes ect using the inspector but no luck

If you've no idea I'll just theme it custom :)

[JakeStanger]

I'm not sure, it seems like an odd default. You can use border-radius: 100% to get a circle though.