kivy: Button inherits from Label. reordering

gui/kivy/main.kv

@@ -3,10 +3,27 @@
 #:import Factory kivy.factory.Factory
 #:import _ electrum_gui.kivy.i18n._
 
-# Custom Global Widgets
+
+###########################
+#     Global Defaults
+###########################
+
+<Label>
+    markup: True
+    font_name: 'Roboto'
+    font_size: '16sp'
+    on_text: _.bind(self)
+
+<TextInput>
+    on_focus: app._focused_widget = root
+
 <Button>
     on_parent: self.MIN_STATE_TIME = 0.1
-    on_text: _.bind(self)
+
+<ListItemButton>
+    font_size: '12sp'
+
+# Custom Global Widgets
 
 <EmptyLabel@Label>
     color: (0.8, 0.8, 0.8, 1)
@@ -19,21 +36,6 @@
     size_hint: 1, None
     height: self.minimum_height
 
-###########################
-#     Global Defaults
-###########################
-<TextInput>
-    on_focus: app._focused_widget = root
-
-<Label>
-    markup: True
-    font_name: 'Roboto'
-    font_size: '16sp'
-    on_text: _.bind(self)
-
-<ListItemButton>
-    font_size: '12sp'
-
 #########################
 #       Dialogs
 #########################