index.php

<?php
/**
 * Main template file.
 *
 * @package Aquila
 */

get_header();

?>

	<div id="primary">
		<main id="main" class="site-main mt-5" role="main">
			<?php
			if ( have_posts() ) :
				?>
				<div class="container">
					<?php
					if ( is_home() && ! is_front_page() ) {
						?>
						<header class="mb-5">
							<h1 class="page-title screen-reader-text">
								<?php single_post_title(); ?>
							</h1>
						</header>
						<?php
					}
					?>

					<div class="row">
						<?php
						$index         = 0;
						$no_of_columns = 3;

						while ( have_posts() ) : the_post();

							if ( 0 === $index % $no_of_columns ) {
								?>
								<div class="col-lg-4 col-md-6 col-sm-12">
								<?php
							}

							get_template_part( 'template-parts/content' );

							$index ++;

							if ( 0 !== $index && 0 === $index % $no_of_columns ) {
								?>
								</div>
								<?php
							}

						endwhile;
						?>
					</div>
				</div>
			<?php

			else :

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

			endif;

			aquila_pagination();
			?>
		</main>
	</div>

<?php
get_footer();