Fix: move css to Blocks constructor (Gradio 5.x compat)"

app.py

@@ -157,7 +157,7 @@ CSS = """
 footer { display: none !important; }
 """
 
-with gr.Blocks(title="🎬 Image-to-Video AI") as demo:
+with gr.Blocks(title="🎬 Image-to-Video AI", css=CSS) as demo:
 
     gr.HTML("""
     <div class="main-header">
@@ -259,4 +259,4 @@ with gr.Blocks(title="🎬 Image-to-Video AI") as demo:
     """)
 
 if __name__ == "__main__":
-    demo.launch(css=CSS)
+    demo.launch()