template one page site treehouse

<?php
/**
* Template Name: One page site
*/

get_header(); ?>

    <?php
    $args = array('post_type' => 'page', 'order' => 'ASC', 'orderby' => 'menu_order');
    $the_query = new WP_Query($args);
    ?>

    <?php if(have_posts()) : while($the_query->have_posts()) : $the_query->the_post(); ?>

        <?php get_template_part( 'content', 'page'); ?>

    <?php endwhile; endif; ?>

<?php get_footer(); ?>