Update app.py

app.py

@@ -272,8 +272,11 @@ if query := st.chat_input("Ask a question"):
 
 
 # Add acknowledgment at the bottom
-st.markdown("---")
-st.markdown("""
-####
-This app is based on [Emmanuel M. Ndaliro's work](https://github.com/kram254/Mixture-of-Agents-running-on-Groq/tree/main). 
-""")
+st.markdown(
+    """
+    <div style="text-align: center;">
+        <h4>This app is based on <a href="https://github.com/kram254/Mixture-of-Agents-running-on-Groq/tree/main">Emmanuel M. Ndaliro's work</a>.</h4>
+    </div>
+    """,
+    unsafe_allow_html=True
+)