index.php

<?php
/**
 * The main template file
 *
 * This is the most generic template file in a WordPress theme
 * and one of the two required files for a theme (the other being style.css).
 * It is used to display a page when nothing more specific matches a query.
 * E.g., it puts together the home page when no home.php file exists.
 *
 * @link https://codex.wordpress.org/Template_Hierarchy
 *
 * @package imDeveloper
 */

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

    <div class="container-fluid">
        <section id="primary" class="blog-main">

            <?php
            if (have_posts()) :
                while (have_posts()) : the_post();

                    get_template_part('template-parts/content', get_post_format());

                endwhile;

                the_posts_navigation();

            else :

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

            endif; ?>

        </section><!-- #primary -->

        <?php get_sidebar(); ?>
    </div>
    <?php get_footer(); ?>
</div>