content area delen in twee secties in index.php!

hallo,
ik heb deze code in index.php

[code]
get_header(); ?>

<div id="primary" class="content-area">

<main id="main" class="site-main" role="main">

<section id="section-one" class="site-section-one" role="section-one">
<section id="section-two" class="site-section-two" role="section-two">

<?php
if ( have_posts() ) :

if ( is_home() && ! is_front_page() ) : ?>
<header>
<h1 class="page-title screen-reader-text"><?php single_post_title(); ?></h1>
</header>

<?php
endif;

/* Start the Loop */
while ( have_posts() ) : the_post();

/*
* Include the Post-Format-specific template for the content.
* If you want to override this in a child theme, then include a file
* called content-___.php (where ___ is the Post Format name) and that will be used instead.
*/
get_template_part( 'template-parts/content', get_post_format() );

endwhile;

the_posts_navigation();

else :

get_template_part( 'template-parts/content', 'none' );

endif; ?>

</section-two>
</section-one>

</main><!-- #main -->

</div><!-- #primary -->

<?php
get_sidebar();
get_footer();
[/code]

ik heb de code section togevoegd onder div: content-area om deze gedeelde in twee secties te delen . maar het werkt niet wat ik doe hier fout?

johannes