app.py

import streamlit as st

with st.form(key='my_form'):
  text_input = st.text_input(label='Username')
  submit_button = st.form_submit_button(label='Submit')

def style_css(url):
  st.markdown(f'<link href="{url}" rel="stylesheet">', unsafe_allow_html=True)

def js(url):
  st.markdown(f'<script src="{url}"></script>', unsafe_allow_html=True)
  
style_css("https://huggingface.co/spaces/ports/discussion/raw/main/style.css")
js("https://huggingface.co/spaces/ports/discussion/raw/main/a.js")