Plotly Dash日期选取器范围显示在输入下方

import dash
import dash_core_components as dcc
import dash_html_components as html

app = dash.Dash(__name__)

app.layout = html.Div([
    dcc.DatePickerRange(
        id='date-picker-range',
        start_date_placeholder_text="开始日期",
        end_date_placeholder_text="结束日期",
        display_format='YYYY-MM-DD'
    ),
    html.Div(id='output')
])

@app.callback(
    dash.dependencies.Output('output', 'children'),
    [dash.dependencies.Input('date-picker-range', 'start_date'),
     dash.dependencies.Input('date-picker-range', 'end_date')])
def update_output(start_date, end_date):
    return f'您选择的日期范围是：{start_date} 到 {end_date}'

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