Update app.py

app.py

@@ -5,8 +5,7 @@ st.set_page_config(
     page_title="app",
     page_icon="👋",
 )
-
-st.write("# Welcome to DataAI! 👋")
+st.markdown("<h1 style='text-align: center; color: black;'> Welcome to DataAI! 👋</h1>", unsafe_allow_html=True)
 
 st.sidebar.success("Select a demo above.")
 
@@ -20,13 +19,13 @@ main_bg_ext = "jpg"
 main_bg = "vally.jpg"
         
 st.markdown(
- f"""
- <style>
- .stApp {{
-     background: url(data:image/{main_bg_ext};base64,{base64.b64encode(open(main_bg, "rb").read()).decode()});
-     background-size: cover
- }}
- </style>
- """,
+ '''
+<style>
+body {
+background-image: url("https://unsplash.com/photos/pen-on-paper-6EnTPvPPL6I");
+background-size: cover;
+}
+</style>
+''',
  unsafe_allow_html=True
 )