How to add caption to images

I’m a newbie to dash and need to figure out how to add captions to the images in my code as stated as follows.

    Output('result', 'children'),
    [Input('button', 'n_clicks')],
    [State('pid', 'value')],

def recs(n_clicks, pid):
    if n_clicks is None:
       return {}

    recs = model.recommend(pid)

    imgs = []
    for row in recs.itertuples():

        html.Img(src=product_img(row[1]), className='d-flex p-2', 
    width='150', height='200'))

    return imgs