404.php

<?php get_header() ?>

	<section id="container">
		<section id="content">

			<article id="post-0" class="post error404 not-found">
				<h2 class="entry-title"><?php _e( 'Not Found', 'sandbox' ) ?></h2>
				<div class="entry-content">
					<p><?php _e( 'Apologies, but we were unable to find what you were looking for. Perhaps  searching will help.', 'sandbox' ) ?></p>
				</div>
				<form id="searchform-404" class="blog-search" method="get" action="<?php bloginfo('home') ?>">
					<div>
						<input id="s-404" name="s" class="text" type="text" value="<?php the_search_query() ?>" size="40" required />
						<input class="button" type="submit" value="<?php _e( 'Find', 'sandbox' ) ?>" />
					</div>
				</form>
			</article><!-- .post -->

			<section class="ad" id="ad468">
				<?php include_once( 'ad/ad468.html' ) ?>
			</section>


		</section><!-- #content -->
	</section><!-- #container -->

<?php get_sidebar() ?>
<?php get_footer() ?>