Not able to add styles to some tags and listitems in addhtml

[jsharookh]

I was trying create a document editor with mceeditor, But many styles like <h1 style="color: #ff0000; text-align:center">Hading</h1> is not working, but <p><span style="color: #ff0000;">Text</span></p> is working, And i tried passing html example in github examples with ol, li , they are also not working. What will be possible mistake am doing
$phpWord = new \PhpOffice\PhpWord\PhpWord(); $section = $phpWord->addSection(); \PhpOffice\PhpWord\Shared\Html::addHtml($section, $sHTMLData, false, false);