Update app.py

app.py

@@ -15,7 +15,7 @@ def generate_qr_image(url, image_size):
         version=1,
         error_correction=qrcode.constants.ERROR_CORRECT_L,
         box_size=60,  # Set a default box size
-        border=1,  # Set a default border size
+        border=0.3,  # Set a default border size
     )
     qr.add_data(url)
     qr.make(fit=True)