Integrating bulma css framework with dash plotly

Question
How to integrate bulma(css framework) to style dash app? The docs indicate use of a cdn or css file should work.

Attempt
app.py(dash)

from dash import Dash, html


app = Dash(__name__)

app.layout = html.Div(children=[
html.H1(children='Hello Dash'),

html.Div(className="primary",
        children='''
            Dash: A web application framework for your data.
        '''),


])

if __name__ == '__main__':
  app.run_server(debug=True)

bulma cdn

<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bulma@0.9.4/css/bulma.min.css">