code: def create_banner(app):
      return html.Div(
          id="banner",
          className="banner",
          children=[
              html.Img(src=app.get_asset_url("merlion_small.svg")),
              html.Plaintext("  Powered by Salesforce AI Research"),
          ],
      )
  
imports: from dash import dcc
  from dash import html
label_desc: Use image node_id 1 for calling a global function with example usage: create_banner(app) and returns: html