source: lightning/4.1.4/comments.php

<?php
/**
 * The template for displaying comments.
 *
 * The area of the page that contains both current comments
 * and the comment form.
 *
 * @package _s
 */

/*
 * If the current post is protected by a password and
 * the visitor has not yet entered the password we will
 * return early without loading the comments.
 */
if ( post_password_required() ) {
        return;
}
?>

<div id="comments" class="comments-area">

        <?php // You can start editing here -- including this comment! ?>

        <?php if ( have_comments() ) : ?>
                <h2 class="comments-title">
                        <?php
                                printf( _nx( 'One thought on &ldquo;%2$s&rdquo;', '%1$s thoughts on &ldquo;%2$s&rdquo;', get_comments_number(), 'comments title', 'lightning' ),
                                        number_format_i18n( get_comments_number() ), '<span>' . get_the_title() . '</span>' );
                        ?>
                </h2>

                <?php if ( get_comment_pages_count() > 1 && get_option( 'page_comments' ) ) : // are there comments to navigate through ?>
                <nav id="comment-nav-above" class="navigation comment-navigation" role="navigation">
                        <h2 class="screen-reader-text"><?php _e( 'Comment navigation', 'lightning' ); ?></h2>
                        <div class="nav-links">

                                <div class="nav-previous"><?php previous_comments_link( __( 'Older Comments', 'lightning' ) ); ?></div>
                                <div class="nav-next"><?php next_comments_link( __( 'Newer Comments', 'lightning' ) ); ?></div>

                        </div><!-- .nav-links -->
                </nav><!-- #comment-nav-above -->
                <?php endif; // check for comment navigation ?>

                <ol class="comment-list">
                        <?php
                                wp_list_comments( array(
                                        'style'      => 'ol',
                                        'short_ping' => true,
                                ) );
                        ?>
                </ol><!-- .comment-list -->

                <?php if ( get_comment_pages_count() > 1 && get_option( 'page_comments' ) ) : // are there comments to navigate through ?>
                <nav id="comment-nav-below" class="navigation comment-navigation" role="navigation">
                        <h2 class="screen-reader-text"><?php _e( 'Comment navigation', 'lightning' ); ?></h2>
                        <div class="nav-links">

                                <div class="nav-previous"><?php previous_comments_link( __( 'Older Comments', 'lightning' ) ); ?></div>
                                <div class="nav-next"><?php next_comments_link( __( 'Newer Comments', 'lightning' ) ); ?></div>

                        </div><!-- .nav-links -->
                </nav><!-- #comment-nav-below -->
                <?php endif; // check for comment navigation ?>

        <?php endif; // have_comments() ?>

        <?php
                // If comments are closed and there are comments, let's leave a little note, shall we?
                if ( ! comments_open() && '0' != get_comments_number() && post_type_supports( get_post_type(), 'comments' ) ) :
        ?>
                <?php
                // Don't display to Page
                if (is_single()) :?>
                <p class="no-comments"><?php _e( 'Comments are closed.', 'lightning' ); ?></p>
                <?php endif; ?>
        <?php endif; ?>

        <?php comment_form(); ?>

</div><!-- #comments -->