<?php
  global $post;
  $paged = get_query_var('paged'); //get_query_var( 'paged' ) ? intval( get_query_var( 'paged' ) ) : 1;
  $args = array(
    'paged' => $paged,
    'posts_per_page' => 5,
    'category_name' => 'news',
    'post_type'   => 'post',
    'order' => 'DESC'
  );
  $each_cat_data = new WP_Query($args);
?>

<?php
  if ($each_cat_data->have_posts()) : // WordPress loop
    while ($each_cat_data->have_posts()) : $each_cat_data->the_post();
?>
        <h3><a href="<?php the_permalink();?>">
          <span class="theme"><?php the_time('Y.m.d'); ?></span><br>
          <span class="title mincho"><?php the_title(); ?></span>
        </a></h3>

<?php endwhile;
  else: ?>
            <p class="not-found">Page not found.</p>
<?php endif;?>

<?php wp_pagenavi(); ?>