Gutenberg Custom Editor Styles - PHP

gutenberg-custom-editor-styles.php

<?php
/**
 * Enqueue the Gutenberg editor stylesheet.
 *
 * Put this in your functions.php.
 *
 * @action enqueue_block_editor_assets
 */
function jr3_enqueue_gutenberg() {
 	// Make sure you link this to your actual file.
	wp_register_style( 'jr3-gutenberg', get_stylesheet_directory_uri() . '/css/editor.css' );
	wp_enqueue_style( 'jr3-gutenberg' );
	
	// This font is enqueued for the demo only.  You probably won't need this.
	wp_register_style( 'jr3-webfonts', 'https://fonts.googleapis.com/css?family=Montserrat' );
	wp_enqueue_style( 'jr3-webfonts' );
}
add_action( 'enqueue_block_editor_assets', 'jr3_enqueue_gutenberg' );