404.php

<?php
/**
 * The template for displaying 404 pages (Not Found).
 *
 * @package Cornerstone
 */

get_header(); ?>

  <div id="primary">
    <div id="content" role="main">

      <article id="post-0" class="post error404 not-found">
        <header class="entry-header">
          <h1 class="entry-title"><?php _e( 'Page not found', 'cornerstone' ); ?></h1>
        </header>

        <div class="entry-content">
          <p><?php _e( 'It seems we can&rsquo;t find what you&rsquo;re looking for... Perhaps we lost it in a remodel? Try searching, or the menu above, to find it.', 'cornerstone' ); ?></p>

          <?php get_search_form(); ?>

        </div><!-- .entry-content -->
      </article><!-- #post-0 -->

    </div><!-- #content -->
  </div><!-- #primary -->

<?php get_footer(); ?>