app.py

import streamlit as st

# Write raw HTML
st.markdown('<h1 style="color:red;">This is a red header!</h1>', unsafe_allow_html=True)

# Embedding an image with HTML
st.markdown('<img src="https://www.pngwing.com/en/free-png-zisuq#google_vignette" alt="Your image">', unsafe_allow_html=True)
st.button('say hello')
# Insert custom HTML block
html_content = """
<div style="background-color:tomato;padding:10px;">
    <h2 style="color:white;text-align:center;">Custom HTML Block</h2>
    <p style="color:white;text-align:center;">This is a block with custom HTML</p>
</div>
"""
st.markdown(html_content, unsafe_allow_html=True)