Update app.py

app.py

@@ -12,7 +12,7 @@ ex = ["The Saudi Founding Day is a national occasion in the Kingdom of Saudi Ara
 
 custom_css = """
 body {
-  background-image: url("/new_file/BG.jpg");
+  background-image: url("/Assignment1part1/BG.jpg");
   background-size: cover;
   background-repeat: no-repeat;
   background-attachment: fixed;