Update app.py

app.py

@@ -1,4 +1,13 @@
 import streamlit as st
 
 x = st.slider('Select a value')
-st.write(x, 'squared is', x * x)
+st.write(x, 'squared is', x * x)
+
+
+st.title ("this is the app title")
+st.header("this is the markdown")
+st.markdown("this is the header")
+st.subheader("this is the subheader")
+st.caption("this is the caption")
+st.code("x=2021")
+st.latex(r''' a+a r^1+a r^2+a r^3 ''')