A stylesheet for elementary OS
You'll need the following dependencies:
meson to configure the build environment. To install, use
meson build --prefix=/usr cd build ninja install
Apps may need to be restarted or the system stylesheet will need to be changed for your changes to take effect.
You can also test changes live with Gtk Inspector. Make sure you have Gtk development libraries installed, then enable the inspector shortcut:
apt install libgtk-3-dev gsettings set org.gtk.Settings.Debug enable-inspector-keybinding true
Open an app you wish to test your changes on. Open Gtk Inspector with the keyboard shortcut Shift + Ctrl + D, then navigate to the tab "Custom CSS". Your changes here will take immediate effect on the focused app.