Adding text to existing PDF file, can not move pdf file

[unluckychild]

Guidelines

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Description of the bug

I have html code, which i want to add to existing pdf file. Problem is, text in html is long and stays over pdf file. Pdf file is like inmovable image on the background. I tried to add margin-bottom or somehow to move the object, but it doesnt move, only texts in html moved.

mPDF version

8.1.3

PHP Version and environment (server type, cli provider etc., enclosing libraries and their respective versions)

8

Reproducible PHP+CSS+HTML snippet suffering by the error

$template = 'Text with css styling ';

$mpdf = new Mpdf\Mpdf(['format' => 'A4-P']);
$mpdf->use_kwt = true;

$pagecount = $mpdf->setSourceFile('mypdf.pdf');
$tplId = $mpdf->importPage($pagecount);
$mpdf->useTemplate($tplId);

$mpdf->WriteHTML($template, 2);
$mpdf->Output();