PdfPTable tableMain = new PdfPTable(relSizeMain);
tableMain.getDefaultCell().setBorder(Rectangle.BOX);
PdfPCell cH1 = new PdfPCell(new Phrase("Krankenkasse", mainBigFont));
cH1.setHorizontalAlignment(Element.ALIGN_CENTER);
tableMain.addCell(cH1);
PdfPCell cH2 = new PdfPCell(new Phrase("Bundesland", mainBigFont));
cH2.setHorizontalAlignment(Element.ALIGN_CENTER);
tableMain.addCell(cH2);