Show sticky posts on the front page

frontpage_sticky_posts.php

/**
 * Show sticky posts on the front page
 *
 * @link - https://wordpress.stackexchange.com/questions/202896/query-only-sticky-posts
 */

function edward_frontpage_sticky_posts() {
        $stickies = get_option( 'sticky_posts' );
        $features = new WP_Query(
                array(
                        'post_type'             => array( 'post', 'page' ),
                        'post__in'              => $stickies,
                        'posts_per_page'        => 12,
                        'ignore_sticky_posts'   => 1,
                        'sort_column'           => 'menu_order', // Important
                        'orderby'               => 'menu_order',
                        'order'                 => 'ASC'
                )
        );
        if ( $stickies && $features->have_posts() ) { ?>
                <section class="page-content clear"> 
                        <?php while ( $features->have_posts() ) : $features->the_post(); ?>
                                <?php get_template_part( 'template-parts/content/content', get_post_format() ); ?>
                        <?php endwhile; ?>
                </section><?php 
                wp_reset_postdata(); 
        }
}