Register sidebars

if ( ! function_exists( '_ff_sidebars' ) ) {

// Register Sidebars
function _ff_sidebars() {

	$args = array(
		'id'            => 'primary',
		'class'         => 'ff-primary-sidebar',
		'name'          => __( 'Primary', 'text_domain' ),
		'description'   => __( 'The Primary sidebar.', 'text_domain' ),
	);
	register_sidebar( $args );

	$args = array(
		'id'            => 'alternate',
		'class'         => 'ff-alternate-sidebar',
		'name'          => __( 'Alternate', 'text_domain' ),
		'description'   => __( 'The Alternate sidebar.', 'text_domain' ),
	);
	register_sidebar( $args );

}
add_action( 'widgets_init', '_ff_sidebars' );

}