Web.Admin/2014/wordpress/wp-content/themes/twentythirteen/sidebar-main.php
<?php
/**
* The sidebar containing the footer widget area
*
* If no active widgets in this sidebar, hide it completely.
*
* @package WordPress
* @subpackage Twenty_Thirteen
* @since Twenty Thirteen 1.0
*/
if ( is_active_sidebar( 'sidebar-1' ) ) : ?>
<div id="secondary" class="sidebar-container" role="complementary">
<div class="widget-area">
<?php dynamic_sidebar( 'sidebar-1' ); ?>
</div><!-- .widget-area -->
</div><!-- #secondary -->
<?php endif; ?>