text: import dash
  import dash_bootstrap_components as dbc
  
  # bootstrap theme
  # https://bootswatch.com/lux/
  external_stylesheets = [dbc.themes.LUX]
  
  app = dash.Dash(__name__, external_stylesheets=external_stylesheets,meta_tags=[
          {"name": "viewport", "content": "width=device-width, initial-scale=1"}
      ])
  server = app.server
  
  #if __name__ =='__main':
  #    app.run_server(port=2020, debug=True)
  
  app.title = 'Crop Production Analysis'
  app.config.suppress_callback_exceptions = True