single.php

<?php
/**
 * The template for displaying all pages, single posts and attachments
 *
 * This is a new template file that WordPress introduced in
 * version 4.3. Note that it uses conditional logic to display
 * different content based on the post type.
 *
 * @link https://codex.wordpress.org/Template_Hierarchy
 *
 * @package     Mark
 * @link        https://themebeans.com/themes/mark
 */

get_header(); ?>

<div id="primary" class="content-area">

	<main id="main" class="site-main" role="main">

		<?php
		// Start the loop.
		while ( have_posts() ) :
			the_post();

			// Include the single post content template.
			get_template_part( 'template-parts/content', 'single' );

			the_post_navigation(
				array(
					'next_text' => '<div class="nav-arrow"></div><div class="nav-title"><span class="meta-nav" aria-hidden="true"></span> ' .
						'<span class="screen-reader-text">' . esc_html__( 'Next post:', 'mark' ) . '</span> ' .
						'<span class="post-title">%title</span></div>',
					'prev_text' => '<div class="nav-arrow"></div><div class="nav-title"><span class="meta-nav" aria-hidden="true"></span> ' .
						'<span class="screen-reader-text">' . esc_html__( 'Previous post:', 'mark' ) . '</span> ' .
						'<span class="post-title">%title</span></div>',
				)
			);

			if ( ! is_singular( 'attachment' ) ) {
				// If comments are open or we have at least one comment, load up the comment template.
				if ( comments_open() || get_comments_number() ) {
					comments_template();
				}
			}

			// End of the loop.
		endwhile;
		?>

	</main><!-- #main -->

</div><!-- #primary -->

<?php get_footer(); ?>