Update app.py

app.py

@@ -126,12 +126,13 @@ examples = [
 
 
 css = """
-app-container {
+.gradio-container {
     max-width: 900px;
     margin-left: auto;
     margin-right: auto;
+    background: url('DigiP-AI/FLUX.Dev-LORA/abstract.jpg')
 }
-.gradio-container {background: url('DigiP-AI/FLUX.Dev-LORA/abstract.jpg')}
+
 """
 with gr.Blocks(theme=theme, css=css, elem_id="app-container") as app:
     gr.HTML("<center><h6>🎨 FLUX.1-Dev with LoRA 🇬🇧</h6></center>")