Blank 1st page when converting HTML to PDF using nreco.generated

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C#

VB

ASP.NET

HTML

website

Nreco converted my html code to pdf successfully but It created blank page at first page of pdf with number 5 for A4 page size and 104 for letter size.

Dim sw As New StringWriter()
Dim htw As New HtmlTextWriter(sw)
Panel1.RenderControl(htw)
Dim Converter As HtmlToPdfConverter = New HtmlToPdfConverter()
Dim htmlContent As String = sw.ToString()
Dim pdf As Byte() = Converter.GeneratePdf(sw.ToString(),PdfSharp.PageSize.Letter)
Response.Charset = "utf-8"
Response.ContentEncoding = System.Text.Encoding.UTF8
Response.Cache.SetCacheability(HttpCacheability.NoCache)
Response.ContentType = "application/pdf"
Response.AddHeader("content-disposition", "attachment;filename=" + "test.pdf")
Response.Buffer = True
Response.BinaryWrite(pdf)
Response.Flush()
Response.Clear()
Response.End()

What I have tried:

I searched about this problem and test all below style but do not work.

page-break-before:avoid;
page-break-after:avoid;
page-break-inside :avoid;