Rotativa pdf bottom position is wrong after upgrade visual studio 17.8

Question

After upgrade to visual studio version 17.8, there is somethings wrong in pdf bottom position as below

I'm currently using Rotativa.AspNetCore 1.3.2 with the below parameters

return new ViewAsPdf(view_name, model, view_data)
{
    PageSize = Rotativa.AspNetCore.Options.Size.A4,
    PageOrientation = Rotativa.AspNetCore.Options.Orientation.Portrait,
    PageMargins = new Rotativa.AspNetCore.Options.Margins(2, 0, 5, 0),
    //PageMargins = { Left = 0, Right = 0 },
    //PageWidth = 180, // it's in millimeters
    //PageHeight = 277,
    CustomSwitches = "--disable-smart-shrinking",
    ContentDisposition = Rotativa.AspNetCore.Options.ContentDisposition.Inline
    //FileName = _doc_uri + fileName
    //SaveOnServerPath = _doc_
};

---

1.Visual studio 17.6

---

2. After upgrade to 17.8

---

3. css for the bottom div element

#invoice_bottom {
    padding-top: 5px;
    margin-left: 30px;
    border-top: 1px solid #ddd;
    height: 100px;
    width: 720px;
    position: fixed;
    left: 0;
    bottom: 10px;
}

@media print {

     @page {
        size: A4 portrait; 
        margin: 0;
        
        @bottom-center {
          / *content: element(footer);*/
        }

        @top-center {
          /*content: element(header);*/
        }
    }

    html, body {
        width: 210mm;
        height: 297mm;
        display: block;
    }
}

I have no clue on this problem at all. Could you please help