Update app.py

app.py

@@ -27,4 +27,32 @@ def add_bg_from_url():
          unsafe_allow_html=True
      )
 
-add_bg_from_url() 
+add_bg_from_url() 
+
+import time
+import requests
+
+import streamlit as st
+from streamlit_lottie import st_lottie
+from streamlit_lottie import st_lottie_spinner
+
+
+def load_lottieurl(url: str):
+    r = requests.get(url)
+    if r.status_code != 200:
+        return None
+    return r.json()
+
+
+lottie_url_hello = "https://assets5.lottiefiles.com/packages/lf20_V9t630.json"
+lottie_url_download = "https://assets4.lottiefiles.com/private_files/lf30_t26law.json"
+lottie_hello = load_lottieurl(lottie_url_hello)
+lottie_download = load_lottieurl(lottie_url_download)
+
+
+st_lottie(lottie_hello, key="hello")
+
+if st.button("Download"):
+    with st_lottie_spinner(lottie_download, key="download"):
+        time.sleep(5)
+    st.balloons()