Update app.py

app.py

@@ -438,10 +438,6 @@ def create_gradio_app():
     
     # Custom CSS for better styling
     custom_css = """
-    .gradio-button {
-    background-color: #4CAF50; /* Green buttons */
-    color: white;
-}
     .main-header {
         text-align: center;
         margin-bottom: 2rem;
@@ -458,8 +454,12 @@ def create_gradio_app():
         }
     }
     """
+
+    theme = gr.themes.Base(
+    primary_hue="indigo",
+    )
     
-    with gr.Blocks(title="🧠 Brain Tumor Detection - Grad-CAM++", theme=gr.themes.Soft(), css=custom_css) as app:
+    with gr.Blocks(title="🧠 Brain Tumor Detection - Grad-CAM++", theme=theme, css=custom_css) as app:
         
         gr.HTML("""
         <div class="main-header">