Update app.py

app.py

@@ -223,9 +223,21 @@ def salamandra_chat_endpoint(prompt: str) -> Dict[str, Any]:
     return {"text": text}
     
 # =================== UI ===================
+custom_css = """
+h2 {
+    background: #e3e4e6 !important;
+    padding: 14px 22px !important;
+    border-radius: 14px !important;
+    box-shadow: 0 4px 12px rgba(0,0,0,0.08) !important;
+    display: block !important;       /* ocupa tot l'ample */
+    width: 100% !important;          /* assegura 100% */
+    margin: 20px auto !important;
+    text-align:center;
+}
+"""
 
 # Main interface for Salamandra 7B Tools: supports tool specification (function calling)
-with gr.Blocks(title="Salamandra 7B Tools · ZeroGPU") as demo:
+with gr.Blocks(title="Salamandra 7B Tools · ZeroGPU", css=custom_css, theme=gr.themes.Soft()) as demo:
 
     # Header description for the UI
     gr.Markdown("## Salamandra-7B-Tools · ZeroGPU\nXat amb especificació d'eines (function-calling).")