by Studio Immens on WordPress.org
Create your own set of custom CSS classes, ready to use with one click, to enhance the design of your Gutenberg blocks.

Admin section for creating and editing custom CSS classes.
Studio Immens CSS Classes is a developer-focused plugin built for speed, flexibility, and real results. Designed for agencies, freelancers, and pros who want to supercharge Gutenberg-based WordPress sites, this plugin empowers you to ditch repetitive CSS and deploy custom utility classes with zero friction.
The latest version adds seamless integration with a curated set of popular CSS frameworks—Bootstrap, Materialize, UIkit, PureCSS, Semantic UI, Spectre.css, and Bulma. Here’s what you can now do in one click:
• Select your preferred CSS framework right from the editor.
• Automatically access the full list of utility classes from that framework.
• Preview how classes look in real time, directly inside Gutenberg blocks.
• Apply classes instantly—no manual coding, no guesswork.
All of this while maintaining razor‑sharp performance: a tiny, clean stylesheet and no unnecessary JavaScript overhead, keeping your site lean and lightning fast.
Perfect for those who use a modular approach to layout construction and want to avoid writing custom rules in the theme or block CSS every time.
You can easily combine classes to achieve complex results.
Developed by Studio Immens – Modular digital solutions for professionals and businesses.
This plugin is licensed under the GPL v2 or later.