{
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    {
      "name": "Scrolling background of LayoutView #document",
      "bounds": [785, 1200],
      "contentsOpaque": true,
      "backgroundColor": "#FFFFFF",
      "transform": 1
    },
    {
      "name": "LayoutBlockFlow (positioned) DIV id='composited-background-attachment-fixed'",
      "bounds": [500, 1000],
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      ],
      "transform": 2
    },
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}