move css to the launch method

app.py

@@ -887,7 +887,7 @@ div#warning-perf > .gr-prose > h2, div#warning-perf > .gr-prose > p {
 """
 
 
-with gr.Blocks(css=css) as demo:
+with gr.Blocks() as demo:
     gr.Markdown(
         """
         # EchoMimicV2
@@ -1088,4 +1088,4 @@ with gr.Blocks(css=css) as demo:
 
 if __name__ == "__main__":
     demo.queue()
-    demo.launch(show_error=True, ssr_mode=False)
+    demo.launch(show_error=True, ssr_mode=False, css=css)