Update app.py

app.py

@@ -0,0 +1,21 @@
+import pickle 
+import streamlit as st
+import pandas as pd
+import numpy as np
+
+st.title("Hello streamlit")
+
+st.header("Header")
+
+st.subheader("Subheader")
+
+st.text("Welcome to my first eer streamlit app")
+
+st.markdown("""
+
+## h2 tag
+### h3 tag 
+:moon: <br>
+:sunglasses:
+
+""", True)