fixed

app.py

@@ -2,11 +2,15 @@ import streamlit as st
 
 st.title('A multipage application featuring various Natural Language Processing instruments and functions')
 st.markdown(
-   f"""
-   <style>
-   p {
-   background-image: url(‘aperiodic.png’);
-   }
-   </style>
-   """,
-   unsafe_allow_html=True)
+    """
+    <style>
+    body {
+        background-image: url('aperiodic.png');
+        background-size: cover;
+        background-repeat: no-repeat;
+        background-attachment: fixed;
+    }
+    </style>
+    """,
+    unsafe_allow_html=True
+)