two sidebars

// Register Sidebars
function custom_sidebars() {

	$args = array(
		'id'            => 'sidebar_left',
		'class'         => 'sidebar_left',
		'name'          => __( 'Left Sidebar', 'text_domain' ),
		'description'   => __( 'The left sidebar', 'text_domain' ),
	);
	register_sidebar( $args );

	$args = array(
		'id'            => 'sidebar_right',
		'class'         => 'sidebar_right',
		'name'          => __( 'Right sidebar', 'text_domain' ),
		'description'   => __( 'Sidebar on the right side', 'text_domain' ),
	);
	register_sidebar( $args );

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