hp/404.php

<?php get_header();?>
  <div class="container">
    <div class="row py-5">
      <div class="col-lg-6">
        <h1>Error 404</h1>
        <h2>Nothing Found</h2>
        <h3>Search Again?</h3>
        <div class="text-dark">
        <?php get_search_form();?>
        </div>
      </div>
    </div>
  </div>
<?php get_footer();?>