Update app.py

app.py

@@ -146,7 +146,7 @@ def feifeichat(image):
 
 # CSS to style the app
 css = """
-.gradio-container {background-color: LightSeaGreen  }
+.gradio-container {background-color: MediumAquaMarine}
 footer{display:none !important}
 #app-container {
     max-width: 930px;