Mirror CSS from full-page.php

Previously, in this question, Alchymyth showed me how to mirror the theme’s CSS, by using the structure as it is used in content-page.php:

<article id="post-<?php the_ID(); ?>" <?php post_class(); ?>>

However, in this case, I would like the CSS to mimic the full-width.php, which looks like this:

get_header(); ?>
	<div id="primary" class="site-content">
		<div id="content" role="main">
		<?php while ( have_posts() ) : the_post(); ?>
		<?php get_template_part( 'content', 'page' ); ?>
		<?php comments_template( '', true ); ?>
		<?php endwhile; // end of the loop. ?>
		</div><!-- #content -->
	</div><!-- #primary -->
<?php get_footer(); ?>

How should I go about it?