using Gtk 4.0; using Adw 1; Gtk.Box page { orientation: vertical; hexpand: true; Adw.PreferencesPage { Adw.PreferencesGroup { Gtk.Label { label: "Select voice packages"; margin-top: 16; styles ["title-1"] } } Adw.PreferencesGroup voice_packages_group { vexpand: true; valign: center; } Adw.PreferencesGroup { vexpand: true; valign: center; Gtk.Box { orientation: horizontal; spacing: 8; halign: center; Gtk.Button continue_button { label: "Continue"; styles ["suggested-action"] } Gtk.Button exit_button { label: "Exit"; } } } } }