single.php

<?php
/**
 * The template for displaying all single posts
 *
 * @link https://developer.wordpress.org/themes/basics/template-hierarchy/#single-post
 *
 * @package Blogsia
 */

get_header();
?>

	<main id="primary" class="site-main">
		<div class="container">
			<div class="row justify-content-center">
				<div class="col-md-9 col-lg-8 col-xl-8">
					<?php
						while ( have_posts() ) :
							the_post();

							get_template_part( 'template-parts/content', 'single' );

							the_post_navigation(
								array(
									'prev_text' => '<span class="nav-subtitle">' . esc_html__( 'Previous:', 'blogsia' ) . '</span> <span class="nav-title">%title</span>',
									'next_text' => '<span class="nav-subtitle">' . esc_html__( 'Next:', 'blogsia' ) . '</span> <span class="nav-title">%title</span>',
								)
							);

							// If comments are open or we have at least one comment, load up the comment template.
							if ( comments_open() || get_comments_number() ) :
								comments_template();
							endif;

						endwhile; // End of the loop.
					?>
				</div> <!-- .col-md-9 .col-lg-8 .col-xl-8 -->
				<?php
					get_sidebar();
				?>
			</div>
		</div>
	</main><!-- #main -->

<?php
get_footer();