My name is Rhonald Brito, it is my first time here, I have about 1 year using Codeigniter and MPDF, here I let you know my code:
public function Make_PDF($view, $data, $file_name) {
$html = $this->load->view($view, $data, true);
$this->mpdf = new mPDF();
$this->stylesheet = file_get_contents('css/style.css');
$this->mpdf->AddPage('L', // L - landscape, P - portrait
'', '', '', '',
30, // margin_left
30, // margin right
30, // margin top
30, // margin bottom
18, // margin header
12); // margin footer
$this->mpdf->WriteHTML($html);
//$this->mpdf->Output($file_name, 'D'); // download force
$this->mpdf->Output($file_name, 'I'); // view in the explorer
// for more information rhonalejandro@gmail.com
}