Update app.py

app.py

@@ -31,7 +31,20 @@ def calculate_weight(earth_weight, planet):
 
 # Gradio UI interface
 def main():
-    with gr.Blocks() as demo:
+    with gr.Blocks(css="""
+        .gradio-container {
+            background: url('https://path-to-your-image.jpg') no-repeat center center fixed;
+            background-size: cover;
+            min-height: 100vh;
+        }
+        .gradio-container .output-box {
+            animation: fadein 2s ease-in-out;
+        }
+        @keyframes fadein {
+            from { opacity: 0; }
+            to { opacity: 1; }
+        }
+    """) as demo:
         gr.Markdown("# Weight Calculator on Different Planets")
         gr.Markdown("Enter your weight on Earth and choose a planet to find your weight on it.")