File Contents: /home/planet5/www/haylingdentist.co.uk/wp-content/themes/twentytwenty/template-parts/navigation.php

<?php
/**
 * Displays the next and previous post navigation in single posts.
 *
 * @package WordPress
 * @subpackage Twenty_Twenty
 * @since Twenty Twenty 1.0
 */

$next_post = get_next_post();
$prev_post = get_previous_post();

if ( $next_post || $prev_post ) {

$pagination_classes = '';

if ( ! $next_post ) {
		$pagination_classes = ' only-one only-prev';
	} elseif ( ! $prev_post ) {
		$pagination_classes = ' only-one only-next';
	}

<nav class="pagination-single section-inner<?php echo esc_attr( $pagination_classes ); ?>" aria-label="<?php esc_attr_e( 'Post', 'twentytwenty' ); ?>">

<?php
			if ( $prev_post ) {
				?>

<?php
			}

if ( $next_post ) {
				?>

</div>

</nav>

<?php
}

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