Loop para trazer infos de categoria e trabalhar no css

<?php 
  $args = array(
    'post_type'      => 'post',
    'posts_per_page' => 2,
    'orderby'        => 'rand',
  );

  $loop = new WP_Query( $args );
  while ( $loop->have_posts() ):
    $loop->the_post();

  $postcat = get_the_category();

  if ( ! empty( $postcat ) ) {
      $category = $postcat[0]->slug ;   
      $category_name = $postcat[0]->name ;   
  }

  ?>
    <div class="conteudo-rodape__item <?= $category ?>" style="background: url('<?= get_the_post_thumbnail_url(); ?>'); background-position: center center; background-size: cover;">
      <div class="texto">

        <div class="texto__cat">
          <a href="javascript:void(0)">
            <?= $category ?>
          </a>
        </div><!-- /texto__cat -->
        <h3>
          <?php the_title(); ?>
        </h3>
      </div><!-- /texto -->
    </div><!-- /conteudo-rodape__item -->
<?php endwhile; ?>
<?php wp_reset_query(); ?>