Saving Image over Image as a new image in plolty dash

📊 Plotly Python
1

I have imported an image in plotly dash and then put some other images over it ( like a collage ) . How can I save all group as one image in plotly dash .

Want to save everything under this div as an image.

html.Div(children = [ 
                                        html.Img(src=dash.get_asset_url('bg_image.png'),
                                                 style={"position": "absolute", "top": "20px", "right": "0px", "width": "1080px", "height": "1920px", "object-fit": "cover"}),
                                        html.Div(id="overlay_area",
                                                children=[
                                                    html.H3(id = 'time',style={"position": "absolute","top": "30px", "right": "450px"}),
                                                    html.Img(id = 'overlay1',src=dash.get_asset_url('dummy.png'),
                                                             style={"position": "absolute", "top": "70px", "right": "620px", "width": "350px", "height": "350px", "object-fit": "cover"}),
                                                    html.Img(id = 'overlay2',src=dash.get_asset_url('dummy.png'),
                                                             style={"position": "absolute", "top": "440px", "right": "620px", "width": "350px", "height": "350px", "object-fit": "cover"}),
                                                    html.Img(id = 'overlay3',src=dash.get_asset_url('dummy.png'),
                                                             style={"position": "absolute", "top": "790px", "right": "620px", "width": "350px", "height": "350px", "object-fit": "cover"}),
                                                ],
                                            )
                                         ],style={"padding": "0", "margin": "0", "width": "100%", "height": "100%", "position": "relative"})

figure = go.Figure()
figure.add_layout_image(
    source='/assets/overlay1.png',
    x=0,
    y=0,
    xref='x',
    yref='y',
)

pio.write_image(figure,"/assets/1.png")    #  dont save anything but blank gird of plot