themes-wordpress/lettre/templates/home.html

<!-- wp:template-part {"slug":"header","tagName":"header"} /-->

<!-- wp:pattern {"slug":"lettre/newsletter-intro"} /-->

<!-- wp:group {"tagName":"main","align":"full","layout":{"contentSize":"1000px"}} -->
<main class="wp-block-group alignfull" id="posts">
	<!-- wp:pattern {"slug":"lettre/query-posts"} /-->
</main>
<!-- /wp:group -->

<!-- wp:template-part {"slug":"footer","tagName":"footer"} /-->