Jorge del Campo Andrade

The default Additional CSS editor in Gutenberg feels like writing code in Notepad. It’s small, lacks structure, and makes debugging a headache.
This plugin transforms that basic textarea into a comfortable, lightweight CSS editor directly inside the Site Editor.
My greatest wish is that this plugin will become obsolete once WordPress includes this feature natively in Gutenberg. Until then, it substantially improves your daily workflow.
Key coding features supported:
<ul>
<li>Line numbers</li>
<li>Auto indented</li>
<li>Auto closing parenthesis</li>
<li>Add comments with Ctrl / Cmd shortcodes (Ctrl + Ç, Ctrl + / and Ctrl + 7)</li>
</ul>

Advanced editor for Additional CSS

Enhance the Additional CSS editor in Gutenberg / FSE with line numbers, indented and improved styling.

Themeisle

Hardeep Asrani

Blocks CSS allows you add custom CSS to your Blocks straight from the Block Editor (Gutenberg).
It adds a syntax-highlighted CSS Editor where you can add additional CSS to your Gutenberg Blocks to style them the way you want.
All the code and sources for this plugin are publicly available as part of https://github.com/Codeinwp/otter-blocks.

Blocks CSS: CSS Editor for Gutenberg Blocks

This is must have plugin for Gutenberg Block Editor. Makes it so much easier to add css classes where you use the blocks! 

Excellent!

I think I just would not be able to use the block editor without this. Thank you so much for this plugin!

This plugin saved my life!


This is a great tool for what it does. The only confusing thing for me is that it says on .org that you have 11 blocks.  I couldn't spot any new ones after installing this plugin, nor found any settings.


This is a great tool for those wanting to use core blocks


Can't think of Block Editor without this. Tiny powerful thing. 



Only thing I hate in this plugin is the following line:



$render_css = empty( $file_name ) || strpos( $file_name, 'post-v2' ) === false;



This means if you deactivate Otter, your content might just break :( 


Completes Block Editor

Simple and great plugin!

Blocks CSS allows you add custom CSS to your Blocks straight from the Block Editor (Gutenberg).

Advanced editor for Additional CSS vs Blocks CSS: CSS Editor for Gutenberg Blocks