update: netron display

app.py

@@ -1,6 +1,5 @@
 import gradio as gr
 import os
-import threading
 
 # Paths for images
 yolov5_result = os.path.join(os.getcwd(), "data/xai/yolov5.png")
@@ -15,7 +14,8 @@ def get_netron_html(model_url):
             src="{model_url}" 
             width="100%" 
             height="800" 
-            frameborder="0">
+            frameborder="0" 
+            style="background-color: black; border: 2px solid white;">
         </iframe>
     """