^^&&^^

Edit File: template-single-portfolio.php

<?php
/**
 * Title: Portfolio single post template
 * Slug: twentytwentyfour/template-single-portfolio
 * Template Types: posts, single
 * Viewport width: 1400
 * Inserter: no
 */
?>

<main class="wp-block-group alignfull">
	
	<div style="height:var(--wp--preset--spacing--40)" aria-hidden="true" class="wp-block-spacer">
	</div>

<div class="wp-block-group alignwide">
		
	</div>

<div style="height:var(--wp--preset--spacing--40)" aria-hidden="true" class="wp-block-spacer">
	</div>

</main>