<?php 
function fenix_consulting ($atts)
    {
        $atts = shortcode_atts(
            array(
                'post'  => '',
                'id'    => ''
            ),
            $atts,
            'fenix_consulting'
        );

        $out = '';

        if ($atts['post']!=='')
            {
                $args = array(
                    'numberposts'   => 1,
                    'post__in'      => array($atts['post']),
                    'order'         => 'ASC',
                    'limit'         => 1
                );
                $posts = get_posts($args);
                foreach($posts as $key=>$post)
                    {   
                        $out = ''.

                        '<!--Fenix Medica consulting-->'.
                        '<div id="'.$atts['id'].'" class="container-fluid fenix_consulting shadow-sm">'.
                            '<div class="row flex-md-row-reverse">'.
                                '<div class="col-12 col-md-6">'.
                                    (
                                        has_post_thumbnail($post->ID)?
                                            '<img src="'.get_the_post_thumbnail_url($post->ID, 'full').'" class="img-fluid mb-4 mb-md-0"/>':
                                            ''
                                    ).
                                '</div>'.
                                '<div class="col-12 col-md-6 text-end pt-md-4 mw-md">'.
                                    '<h1>'.
                                        $post->post_title.
                                        (
                                            $post->post_excerpt!=''?
                                                '<div>'.$post->post_excerpt.'</div>':
                                                ''
                                        ).
                                    '</h1>'.
                                    '<div>'.
                                        $post->post_content.
                                    '</div>'.
                                '</div>'.
                            '</div>'.
                        '</div>';
                    }
                wp_reset_postdata();

                unset($key, $post, $posts, $args);
            }
        return $out;
    }
add_shortcode('fenix_consulting', 'fenix_consulting');