app.py

import streamlit as st

def main():
    st.set_page_config(page_title="Terms of Service Agreement", page_icon=":guardsman:", layout="wide")
    st.title("Terms of Service Agreement")

    agreed = st.checkbox("I agree to the terms of service")
    username = st.text_input("Enter your username")
    
    if st.button("Submit") and agreed and username.strip():
        st.title("Congratulations!")
        st.write(f"Welcome to our platform, {username}!")

if __name__ == "__main__":
    main()