Update app.py

app.py

@@ -1,4 +1,27 @@
 import streamlit as st
+import base64
+import streamlit as st
+
+
+def get_base64(bin_file):
+    with open(bin_file, 'rb') as f:
+        data = f.read()
+    return base64.b64encode(data).decode()
+
+
+def set_background(png_file):
+    bin_str = get_base64(png_file)
+    page_bg_img = '''
+    <style>
+    body {
+    background-image: url("data:image/png;base64,%s");
+    background-size: cover;
+    }
+    </style>
+    ''' % bin_str
+    st.markdown(page_bg_img, unsafe_allow_html=True)
+
+set_background('./images/background.png')
 
 add_selectbox = st.sidebar.selectbox(
     "How would you like to be contacted?",
@@ -9,13 +32,4 @@ with st.sidebar:
     add_radio = st.radio(
         "What day are you available",
         ("Monday", "Tuesday","Wednesday","Thursday", "Friday","Saturday","Sunday")
- page_bg_img = '''
-<style>
-body {
-background-image: url("https://images.unsplash.com/photo-1542281286-9e0a16bb7366");
-background-size: cover;
-}
-</style>
-'''
-
-st.markdown(page_bg_img, unsafe_allow_html=True)
+