Update app.py

app.py

@@ -52,8 +52,7 @@ class Modern(Base):
             body_text_color_subdued_dark="#999",
             border_color_primary="#333",
             border_color_primary_dark="#333",
-            spacing_size=sizes.spacing_md,
-
+            
             # Blocks
             block_radius="0 0 0 0",
             block_border_width="1px",