JS and CSS working in HTML but not in streamlit app

[mathcatsand]

You can’t run JavaScript through st.markdown, you need the components API.

Embed function to html in st.markdown

You won’t be able to execute any JavaScript using st.markdown. You will need to use the components api instead. Note that with the components api, your HTML/JavaScript will get wrapped in an iframe, so be sure to use window.parent.document to reach outside of the iframe where needed.