html table size not fit within a letter size pdf

I am new in HTML-Renderer. I tried many times to fix the table size in html edited in VS html editor in HTML 4.01. However, the table is scaled up and always outside of the letter size pdf. I also defined the size of the table in html codes.

Is there anyway in the HTML-Renderer to fix the table inside the letter pdf size.

Thanks,

public PDFCombination(string html)
{
PdfGenerateConfig config = new PdfGenerateConfig()
{
MarginBottom = 25,
MarginLeft = 20,
MarginRight = 20,
MarginTop = 25,
PageSize = PdfSharp.PageSize.Letter,
PageOrientation = PdfSharp.PageOrientation.Portrait,
};
PdfDocument tempPDFDoc = PdfGenerator.GeneratePdf(html, config);

tempPDFDoc.Save("temp");
}