Hey Simon,
If you’re using a child theme, you can enqueue your own CSS to the editor itself. The only issue is you have to deal with CSS specificity.
For example, if you add an editor.css
file in your child theme, you can then add this function to add it to the editor:
add_action( 'enqueue_block_editor_assets', function() {
wp_enqueue_style( 'my-block-editor-styles', get_stylesheet_directory_uri() . "/editor.css", false,'1.0', 'all' );
} );
Let me know if you need more info π