souliyo

An easy-to-use WordPress Plugin to add custom CSS styles that override Plugin and Theme default styles. This plugin is designed to meet the needs of administrators who would like to add their own CSS to their WordPress website.
Features
<ul>
<li>Simplest way of adding Lao font to your WordPress website</li>
</ul>

Souliyo Key

Add Souliyo Unicode font or Lao font to your Wordpress website without coding.

iamaliiraja

Super Block CSS allows you to 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.
Key features:
<ul>
<li>Adds a Custom CSS panel to every Gutenberg blocks</li>
<li>Syntax-highlighted CSS editor for easy coding</li>
<li>Apply custom styles to individual blocks</li>
<li>Global CSS option for site-wide styles</li>
<li>Real-time preview of your custom styles in the editor</li>
<li>Easy-to-use interface integrated into the Gutenberg editor</li>
</ul>
Whether you’re a developer looking to fine-tune your blocks or a site owner wanting to add some custom flair, Super Block CSS gives you the power to customize your Gutenberg blocks with ease.

Super Blocks CSS – Custom CSS for Gutenberg Blocks

Awesome plugin, i will always use this one from now.



WOW !!

Add custom CSS to your Gutenberg blocks directly from the block editor.

Souliyo Key vs Super Blocks CSS – Custom CSS for Gutenberg Blocks