Update app.py

app.py

@@ -78,8 +78,8 @@ def draw_card(background, suit, value, level, card_width, card_height):
 
         # Resize and add image to SVG
         image = image.resize((card_width, card_height))
-        image.save("background.png")
-        img = svgwrite.image.Image(href="background.png", size=(f"{card_width}px", f"{card_height}px"))
+        image.save(background)
+        img = svgwrite.image.Image(href=background, size=(f"{card_width}px", f"{card_height}px"))
         dwg.add(img)
 
     # Add suit and value labels