Update app.py

app.py

@@ -33,7 +33,7 @@ def calculate_weight(earth_weight, planet):
 def main():
     with gr.Blocks(css="""
         .gradio-container {
-            background: url('https://img.freepik.com/free-photo/purple-black-futuristic-aztec-abstract-background-with-squares-neon-lights_181624-27830.jpg') no-repeat center center fixed;
+            background: url('https://www.pixelstalk.net/wp-content/uploads/images6/Solar-System-HD-Wallpaper-Computer.jpg') no-repeat center center fixed;
             background-size: cover;
             min-height: 100vh;
         }