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://developer.wordpress.org/themes/basics/template-hierarchy/
 *
 * @package Lesson
 */
get_header(); 

?>

<main class="main-content">
<?php 
if(is_front_page())
{
    if (have_posts()):
        // function to check if its is home page and to display the Page Title
        while (have_posts()):
            the_post() ?>
           <?php get_template_part('template-parts/content-page', get_post_format()); ?> 
    
    
        <?php
        endwhile;
    
    endif; 
}
else
{
if (have_posts()):
    // function to check if its is home page and to display the Page Title
    while (have_posts()):
        the_post() ?>
       <?php get_template_part('template-parts/content', get_post_format()); ?> 


    <?php
    endwhile;

endif;

}
?>


</main>
<?php
get_footer();
?>