Adding and enqueuing custom css to the login screen

adding-custom-css

// Add styling 
function my_login_stylesheet() { 
	$mycustomcssurl = plugins_url( 'custom.css', __FILE__ );
	wp_register_style( 'custom-css', $mycustomcssurl,'','', 'screen' );
	wp_enqueue_style( 'custom-css' );
}
add_action( 'login_enqueue_scripts', 'my_login_stylesheet' );