Update css

app.py

@@ -134,7 +134,7 @@ if __name__ == "__main__":
     .gradio-container {background-color: black; color: white;}
     input, button, select, textarea, .gr-button, .gr-file, .gr-dropdown, .gr-image, .gr-file-upload {background-color: #333; color: white; border-color: white;}
     .gr-button, .gr-file, .gr-dropdown, .gr-image, .gr-file-upload {border: 1px solid white;}
-    .gr-image-preview {background-color: #333; color: white; border: 1px solid white;}  /* Set image preview background to dark grey */
+    .gr-image-preview, .output_image, .output_file {background-color: #333; color: white; border: 1px solid white;}  /* Set image and file output background to dark grey */
     """
 
     with gr.Blocks(css=css) as demo:
@@ -190,4 +190,3 @@ if __name__ == "__main__":
         )
 
     demo.launch()
-