How can one troubleshoot and debug issues like content shifting or overlapping when using DOMPDF in PHP?

To troubleshoot and debug issues like content shifting or overlapping when using DOMPDF in PHP, you can start by checking the HTML and CSS code for any errors or inconsistencies that might be causing the problem. Make sure to use inline styles instead of external CSS files for better compatibility with DOMPDF. Additionally, adjust the page margins and sizes to ensure proper rendering of the content.

<?php
require_once 'dompdf/autoload.inc.php';

$dompdf = new Dompdf\Dompdf();

$html = '<html><body><div style="width: 100px; height: 100px; background: red;">Content</div></body></html>';

$dompdf->loadHtml($html);
$dompdf->setPaper('A4', 'portrait');
$dompdf->render();
$dompdf->stream();
?>