st.header() in Streamlit

The st.header() function is a text display function in Streamlit used to show a medium-sized bold heading in your app.

It is smaller than st.title() but larger than st.subheader(). It is typically used to divide sections of your app or provide a descriptive heading for a content block.

Syntax

st.header(body)

The function has the following parameter:

body: The text to display as a header. It can be a string, Markdown-supported text, or an f-string.

Note: st.header() automatically applies a larger font style and bold formatting for emphasis.

Example: Basic Header.

Python

import streamlit as st

month = "October"

st.header(f"Sales Report for {month}")

st.header("**Monthly** Sales Report")

The output of the above code is shown below:

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