themes-wordpress/barnsbury23/patterns/404.php

<?php
/**
 * Title: A 404 page
 * Slug: barnsbury23/404
 * Inserter: no
 */

?>

<!-- wp:group {"tagName":"main","style":{"spacing":{"blockGap":"2rem","margin":{"top":"0px","bottom":"0px"},"padding":{"top":"0px","right":"0px","bottom":"0px","left":"0px"}}},"layout":{"type":"constrained"}} -->
<main class="wp-block-group" style="margin-top:0px;margin-bottom:0px;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px"><!-- wp:spacer {"height":"8rem","style":{"spacing":{"margin":{"top":"0px","bottom":"0px"}}}} -->
<div style="margin-top:0px;margin-bottom:0px;height:8rem" aria-hidden="true" class="wp-block-spacer"></div>
<!-- /wp:spacer -->

<!-- wp:group {"style":{"spacing":{"padding":{"top":"0px","right":"0px","bottom":"0px","left":"0px"},"margin":{"top":"0px","bottom":"0px"},"blockGap":"0px"}},"layout":{"type":"flex","orientation":"vertical","justifyContent":"center"}} -->
<div class="wp-block-group" style="margin-top:0px;margin-bottom:0px;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px"><!-- wp:heading {"textAlign":"center","level":1,"align":"wide","style":{"typography":{"fontSize":"6.4rem"}}} -->
<h1 class="wp-block-heading alignwide has-text-align-center" style="font-size:6.4rem"><?php echo esc_html__( 'Oops...', 'barnsbury23' ); ?></h1>
<!-- /wp:heading -->

<!-- wp:spacer {"height":"2rem","style":{"spacing":{"margin":{"top":"0px","bottom":"0px"}}}} -->
<div style="margin-top:0px;margin-bottom:0px;height:2rem" aria-hidden="true" class="wp-block-spacer"></div>
<!-- /wp:spacer -->

<!-- wp:paragraph {"align":"center"} -->
<p class="has-text-align-center"><?php echo esc_html__( 'This page could not be found. Maybe try a new search?', 'barnsbury23' ); ?></p>
<!-- /wp:paragraph -->

<!-- wp:spacer {"height":"2rem","style":{"spacing":{"margin":{"top":"0px","bottom":"0px"}}}} -->
<div style="margin-top:0px;margin-bottom:0px;height:2rem" aria-hidden="true" class="wp-block-spacer"></div>
<!-- /wp:spacer -->

<!-- wp:search {"label":"<?php echo esc_html__( 'Search', 'barnsbury23' ); ?>","showLabel":false,"placeholder":"<?php echo esc_attr__( 'Search...', 'barnsbury23' ); ?>","width":100,"widthUnit":"%","buttonText":"<?php echo esc_html__( 'Search', 'barnsbury23' ); ?>","buttonUseIcon":true,"align":"center","style":{"border":{"width":"0px","style":"none"}},"backgroundColor":"primary","textColor":"tertiary"} /--></div>
<!-- /wp:group -->

<!-- wp:spacer {"height":"12rem","style":{"spacing":{"margin":{"top":"0px","bottom":"0px"}}}} -->
<div style="margin-top:0px;margin-bottom:0px;height:12rem" aria-hidden="true" class="wp-block-spacer"></div>
<!-- /wp:spacer --></main>
<!-- /wp:group -->