404.php

<?php
/**
 * This page template is used to display a 404 error message.
 *
 * @package 90s Retro
 * @since 90s Retro 1.0
 */

get_header(); ?>

<!-- BEGIN .row -->
<div class="row">

	<!-- BEGIN .content -->
	<div class="content">

	<?php if ( is_active_sidebar( 'default-sidebar' ) ) { ?>

		<!-- BEGIN .eleven columns -->
		<div class="eleven columns">

		<!-- BEGIN .postarea -->
		<div class="postarea">

			<!-- BEGIN .page-holder -->
			<div class="page-holder">

				<!-- BEGIN .article -->
				<div class="article">

					<h1 class="headline"><?php esc_html_e( 'Not Found, Error 404', '90s-retro' ); ?></h1>
					<p><?php esc_html_e( 'The page you are looking for no longer exists.', '90s-retro' ); ?></p>

				<!-- END .article -->
				</div>

			<!-- END .page-holder -->
			</div>

		<!-- END .postarea -->
		</div>

		<!-- END .eleven columns -->
		</div>

		<!-- BEGIN .five columns -->
		<div class="five columns">

			<?php get_sidebar(); ?>

		<!-- END .five columns -->
		</div>

	<?php } else { ?>

		<!-- BEGIN .sixteen columns -->
		<div class="sixteen columns">

			<!-- BEGIN .postarea full -->
			<div class="postarea full">

				<!-- BEGIN .page-holder -->
				<div class="page-holder">

					<!-- BEGIN .article -->
					<div class="article">

						<h1 class="headline"><?php esc_html_e( 'Not Found, Error 404', '90s-retro' ); ?></h1>
						<p><?php esc_html_e( 'The page you are looking for no longer exists.', '90s-retro' ); ?></p>

					<!-- END .article -->
					</div>

				<!-- END .page-holder -->
				</div>

			<!-- END .postarea full -->
			</div>

		<!-- END .sixteen columns -->
		</div>

	<?php } ?>

	<!-- END .content -->
	</div>

<!-- END .row -->
</div>

<?php get_footer(); ?>