source: lightning/7.2.4/index.php

<?php get_header(); ?>

<?php
// Dealing with old files.
// Actually, it's ok to only use get_template_part().
/*-------------------------------------------*/
/* Page Header
/*-------------------------------------------*/
$old_file_name[] = 'module_pageTit.php';
if ( locate_template( $old_file_name, false, false ) ) {
        locate_template( $old_file_name, true, false );
} else {
        get_template_part( 'template-parts/page-header' );
}
/*-------------------------------------------*/
/* BreadCrumb
/*-------------------------------------------*/
$old_file_name[] = 'module_panList.php';
if ( locate_template( $old_file_name, false, false ) ) {
        locate_template( $old_file_name, true, false );
} else {
        get_template_part( 'template-parts/breadcrumb' );
}
?>

<div class="section siteContent">
<?php do_action( 'lightning_siteContent_prepend' ); ?>
<div class="container">
<?php do_action( 'lightning_siteContent_container_prepend' ); ?>
<div class="row">
<div class="<?php lightning_the_class_name( 'mainSection' ); ?>" id="main" role="main">
<?php do_action( 'lightning_mainSection_prepend' ); ?>

        <?php
        /*-------------------------------------------*/
        /*  Archive title
        /*-------------------------------------------*/
        $archiveTitle_html = '';
        $page_for_posts    = lightning_get_page_for_posts();
        // Use post top page（ Archive title wrap to div ）.
        if ( $page_for_posts['post_top_use'] || get_post_type() !== 'post' ) {
                if ( is_year() || is_month() || is_day() || is_tag() || is_author() || is_tax() || is_category() ) {
                        $archiveTitle      = get_the_archive_title();
                        $archiveTitle_html = '<header class="archive-header"><h1>' . $archiveTitle . '</h1></header>';
                }
        }
        echo wp_kses_post( apply_filters( 'lightning_mainSection_archiveTitle', $archiveTitle_html ) );

        /*-------------------------------------------*/
        /*  Archive description
        /*-------------------------------------------*/
        $archiveDescription_html = '';
        if ( is_category() || is_tax() || is_tag() ) {
                $archiveDescription = term_description();
                $page_number        = get_query_var( 'paged', 0 );
                if ( ! empty( $archiveDescription ) && $page_number == 0 ) {
                        $archiveDescription_html = '<div class="archive-meta">' . $archiveDescription . '</div>';
                }
        }
        echo wp_kses_post( apply_filters( 'lightning_mainSection_archiveDescription', $archiveDescription_html ) );

        $postType = lightning_get_post_type();

        do_action( 'lightning_loop_before' );
?>

<div class="postList">

<?php if ( have_posts() ) : ?>

        <?php if ( apply_filters( 'is_lightning_extend_loop', false ) ) { ?>

                <?php do_action( 'lightning_extend_loop' ); ?>

        <?php } else { ?>

                <?php
                while ( have_posts() ) {
                        the_post();

                        /**
                         * Dealing with old files
                         * Actually, it's ok to only use get_template_part().
                         * It is measure for before version 7.0 that loaded module_loop_***.php.
                         */
                        $old_file_name[] = 'module_loop_' . $postType['slug'] . '.php';
                        $old_file_name[] = 'module_loop_post.php';
                        $require_once    = false;
                        if ( locate_template( $old_file_name, false, $require_once ) ) {
                                locate_template( $old_file_name, true, $require_once );
                        } else {
                                get_template_part( 'template-parts/post/loop', $postType['slug'] );
                        }
                } // while ( have_posts() ) {
                ?>

        <?php } // loop() ?>

        <?php
        the_posts_pagination(
                array(
                        'mid_size'           => 1,
                        'prev_text'          => '&laquo;',
                        'next_text'          => '&raquo;',
                        'type'               => 'list',
                        'before_page_number' => '<span class="meta-nav screen-reader-text">' . __( 'Page', 'lightning' ) . ' </span>',
                )
        );
        ?>

        <?php else : // hove_posts() ?>

  <div class="well"><p><?php echo wp_kses_post( apply_filters( 'lightning_no_posts_text', __( 'No posts.', 'lightning' ) ) ); ?></p></div>

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

</div><!-- [ /.postList ] -->

<?php do_action( 'lightning_loop_after' ); ?>
<?php do_action( 'lightning_mainSection_append' ); ?>
</div><!-- [ /.mainSection ] -->

<div class="<?php lightning_the_class_name( 'sideSection' ); ?>">
<?php get_sidebar( get_post_type() ); ?>
</div><!-- [ /.subSection ] -->

</div><!-- [ /.row ] -->
</div><!-- [ /.container ] -->
</div><!-- [ /.siteContent ] -->
<?php get_footer(); ?>