1. Add customTemplates to theme.json
"customTemplates": [
{
"name": "page-no-title", // < has to be page-
"title": "Page (No Title)",
"postTypes": ["page"]
}
]2. Add the file to \templates\
templates\page-no-title.html has to be page-
<!-- wp:template-part {"slug":"header","tagName":"header"} /-->
<!-- wp:group {"tagName":"main","className":"py-12","layout":{"type":"constrained"}} -->
<main class="wp-block-group py-12">
<!-- wp:post-content {"layout":{"type":"constrained"}} /-->
</main>
<!-- /wp:group -->
<!-- wp:template-part {"slug":"footer","tagName":"footer"} /-->