Update app.py

app.py

@@ -4,4 +4,5 @@ import streamlit as st
 def load_data():
   return
 
-st.markdown("### Hello, world!")
+st.title("## Arxiv articles classification")
+st.markdown("This is an interface that can determine the article's topic based on its title and summary. Though it can work with title only, it is recommended to provide summary if possible - this will result in a better prediction quality.)