wkhtmltopdf do not repeat table header code example
Example: wkhtmltopdf remove thead repeating
table { page-break-after:auto }
tr { page-break-inside:avoid; page-break-after:auto }
td { page-break-inside:avoid; page-break-after:auto }
thead { display: table-row-group; }
tfoot { display:table-footer-group }