Edit file File name : 404.html Content :<!-- wp:template-part {"slug":"header","area":"header","tagName":"header"} /--> <!-- wp:group {"tagName":"main","style":{"spacing":{"margin":{"top":"var:preset|spacing|50","bottom":"var:preset|spacing|50"},"blockGap":"var:preset|spacing|30"}},"layout":{"type":"constrained"}} --> <main class="wp-block-group" style="margin-top:var(--wp--preset--spacing--50);margin-bottom:var(--wp--preset--spacing--50)"> <!-- wp:pattern {"slug":"twentytwentyfour/hidden-404"} /--> </main> <!-- /wp:group --> <!-- wp:template-part {"slug":"footer","area":"footer","tagName":"footer"} /--> Save