data/about_app.py

import streamlit as st

st.set_page_config(
    layout="wide",
    initial_sidebar_state="collapsed"
)

### insert external css
def insert_css(css_file:str):
    with open(css_file) as f:
        st.markdown(f"<style>{f.read()}</style>",unsafe_allow_html=True)

# app settings css
insert_css("css_files/app.css")

### insert external html file
def insert_html(html_file):
    with open(html_file) as f:
        return f.read()

st.markdown(insert_html("html_files/about.html"),unsafe_allow_html=True)