Update app.py

app.py

@@ -10,17 +10,14 @@ st.write("# Welcome to DataAI! 👋")
 
 st.sidebar.success("Select a demo above.")
 
-st.markdown(
-    """
-    This is the demo for the usecases we've worked on.
-    **👈 Select a demo from the sidebar** to see some examples
-    of what we can do!!! """
-)
+st.markdown("<h1 style='text-align: center; color: black;'>This is the demo for the usecases we've worked on.</h1>", unsafe_allow_html=True)
 
+st.markdown("<h2 style='text-align: center; color: black;'>Select a demo from the sidebar** to see some examples
+    of what we can do!!! </h2>", unsafe_allow_html=True)
 import base64
 
 main_bg_ext = "jpg"
-main_bg = "vally2.jpg"
+main_bg = "vally.jpg"
         
 st.markdown(
  f"""