Extra Widget Area After Content

if ( ! function_exists( 'add_extra_widget_area_after_content' ) ) {

// Register Sidebar
function add_extra_widget_area_after_content() {

	$args = array(
		'id'            => 'extra-widget-area-after-content',
		'name'          => __( 'Extra Widget Area After Content', 'text_domain' ),
		'description'   => __( 'An extra 100% wide widget area after the page/post content wrapper.', 'text_domain' ),
		'class'         => 'extra-content',
		'before_title'  => '<h2>',
		'after_title'   => '</h2>',
		'before_widget' => '<div class="widget extra-content">',
		'after_widget'  => '</div>',
	);
	register_sidebar( $args );

}

// Hook into the 'widgets_init' action
add_action( 'widgets_init', 'add_extra_widget_area_after_content' );

}