<div class="jumbotron">

            <?php
                $args = array(
                    'post_type' => 'portfolio',
                    'posts_per_page' => 3
                );

                $portfolio = new WP_Query($args);

                while($portfolio->have_posts()) : $portfolio->the_post();
                ?>
                    <?php get_template_part('content', get_post_format());?>

                <?php
                endwhile;

                    ?>
                </div>
                <?php wp_reset_postdata(); ?>

<div class="card p-3">  <?php if(has_post_thumbnail()){

   the_post_thumbnail(array(200,200));
 }
 ?><a href="<?php esc_url(get_permalink()); ?>"><?php the_title() ?></a>

<blockquote class="blockquote mb-0 card-body">
<?php the_content() ?>

<small><?php the_category() === null ? : the_category(); ?></small>

</blockquote>