I also went to i-excel 404 Template (404.PHP) and I see this:
<?php
/**
* The template for displaying 404 pages (Not Found)
*
* @package i-excel
* @since i-excel 1.0
*/
get_header(); ?>
<div id=”primary” class=”content-area”>
<div id=”content” class=”site-content” role=”main”>
<header class=”page-header”>
<h1 class=”page-title”><?php _e( ‘Not found’, ‘i-excel’ ); ?></h1>
</header>
<div class=”page-wrapper”>
<div class=”page-content”>
<h2><?php _e( ‘This is somewhat embarrassing, isn’t it?’, ‘i-excel’ ); ?></h2>
<p><?php _e( ‘It looks like nothing was found at this location. Maybe try a search?’, ‘i-excel’ ); ?></p>
<?php get_search_form(); ?>
</div><!– .page-content –>
</div><!– .page-wrapper –>
</div><!– #content –>
</div><!– #primary –>
<?php get_footer(); ?>
