themes-wordpress/blank-canvas/template-parts/content/content-singular.php

<?php
/**
 * Template part for displaying posts
 *
 * @link https://developer.wordpress.org/themes/basics/template-hierarchy/
 *
 * @package Blank Canvas
 * @since 1.0
 */

$show_post_and_page_titles = get_theme_mod( 'show_post_and_page_titles', false );
?>

<article id="post-<?php the_ID(); ?>" <?php post_class(); ?>>
	<?php if ( $show_post_and_page_titles ) : ?>
		<header class="entry-header default-max-width">
			<?php
			if ( is_singular() ) :
				the_title( '<h1 class="entry-title">', '</h1>' );
			else :
				the_title( sprintf( '<h2 class="entry-title"><a href="%s" rel="bookmark">', esc_url( get_permalink() ) ), '</a></h2>' );
			endif;
			?>
		</header><!-- .entry-header -->
	<?php endif; ?>

	<?php seedlet_post_thumbnail(); ?>

	<div class="entry-content">
		<?php
		the_content(
			sprintf(
				wp_kses(
					/* translators: %s: Name of current post. Only visible to screen readers */
					__( 'Continue reading<span class="screen-reader-text"> "%s"</span>', 'blank-canvas' ),
					array(
						'span' => array(
							'class' => array(),
						),
					)
				),
				get_the_title()
			)
		);

		wp_link_pages(
			array(
				'before' => '<div class="page-links">' . __( 'Pages:', 'blank-canvas' ),
				'after'  => '</div>',
			)
		);
		?>
	</div><!-- .entry-content -->

</article><!-- #post-${ID} -->