title: Change individual node size using Dash-Cytoscape
body: <p>I've been using Dash-Cytoscape for two days now and I tried a lot of things to change the node size individually. 
  I tried this but it didn't work: </p>
  
  <pre><code>import dash
  import dash_cytoscape as cyto
  import dash_html_components as html
  
  app = dash.Dash(__name__)
  app.layout = html.Div([
      cyto.Cytoscape(
          id="cytospace",
          elements=[
              {'data': {'id': 'one', 'label': 'Node 1'}, 'position': {'x': 50, 'y': 50}, 'size':20},
              {'data': {'id': 'two', 'label': 'Node 2'}, 'position': {'x': 200, 'y': 200}, 'size':70},
              {'data': {'source': 'one', 'target': 'two','label': 'Node 1 to 2'}}
          ],
          layout={'name':'preset'},
          style={'height': '95vh',
                 'width': '100%'}
      )
  ])
  
  if __name__ == "__main__":
      app.run_server(debug=True)
  </code></pre>