I found that if I just did:
Table table1 = builder.StartTable();
builder.InsertCell().CellFormat.Borders.LineStyle = LineStyle.None;
//table1.Style = document.Styles["tableStyle"];
builder.InsertParagraph();
b…...seem to work inside a table cell. Or at least when using InsertHtml()...so I applied it within the cells, themselves, and this worked...