/*
Theme Name: Betheme Child
Theme URI: https://themes.muffingroup.com/betheme
Author: Muffin group
Author URI: https://muffingroup.com
Description: Child Theme for Betheme
Template: betheme
Version: 2.0.2
*/
<div class="navigation-custom-wrapper">
    <?php
    $previous_post = get_previous_post();
    $next_post = get_next_post();
    ?>

    <?php if ( !empty( $previous_post ) ): ?>
        <a href="<?php echo esc_url( get_permalink( $previous_post->ID ) ); ?>" class="button-button_size_2 button_border_2 button_color_2 button-item-button">
            <span>
                <i class="button-item-icon fas fa-long-arrow-alt-left"></i> 
                Projet précédent
            </span>
        </a>
    <?php endif; ?>

    <?php if ( !empty( $next_post ) ): ?>
        <a href="<?php echo esc_url( get_permalink( $next_post->ID ) ); ?>" class="button-button_size_2 button_border_2 button_color_2 button-item-button">
            <span>
                Projet suivant 
                <i class="button-item-icon fas fa-long-arrow-alt-right"></i>
            </span>
        </a>
    <?php endif; ?>
</div>