diff --git a/demo.kv b/demo.kv
index c2e10624979aa4d4ada60f7f20c0f5aab96f0205..9893028a232ba8df02cff6b82d98c5efb295c929 100644
--- a/demo.kv
+++ b/demo.kv
@@ -1,2 +1,6 @@
 GridLayout:
     rows: 2
+
+<GuessingButton>:
+    font_size: sp(20)
+    color: (1, 0.5, 0.5, 1)