How to retrive the latest post from two category in wordpress?

 <?php
  $query = new WP_Query(
array(
  'category__in' => array(25,26),
  'posts_per_page' => 1,
  'post_type' => 'post',
  'order'=>'DESC'
)
);
if ( $query->have_posts() ) {
while ( $query->have_posts() ) {
  $query->the_post();
?>
            <div class="next">
              <figure class="cap-figure m-b-20">
               <?php the_post_thumbnail('test'); ?>
<!--   <p class="artha-postion bg-blue"><?php echo get_cat_name(26); ?></p> -->
              </figure>

              <h3><a href="<?php the_permalink(); ?>"><?php the_title(); ?></a></h3>
         
            </div>
          <?php } } wp_reset_query(); ?>