index.php in test theme updated

<?php get_header(); // Moved to top ?>
<?php if ( have_posts() ) { // Added ?>
<?php while ( have_posts() ) { // Added ?>
<?php the_post(); ?>
<section class="content d-flex">
    <div class="container align-self-stretch">
        <div class="row h-100">
            <div class="col-sm-12">
                <?php the_content();?>
            </div>
        </div>
    </div>
</section>
<?php } // Added
} // Added ?>
<?php get_footer(); ?>