Can it help me with color systems?

Absolutely. It specializes in modern color spaces like OKLCH for uniform brightness and helps implement automatic light/dark mode using the light-dark() function.

What is the Modern CSS Claude Code skill?

It is a specialized plugin for Claude Code that provides expert guidance on writing modern, high-quality CSS using the latest browser features and standards.

Does this skill handle browser compatibility?

Yes, it emphasizes 'Baseline' status for features and provides progressive enhancement patterns using @supports to ensure resilient interfaces across all browsers.

When should I use the Modern CSS skill?

Trigger this skill when starting a new frontend project, refactoring old styles, or when you need to implement complex features like Masonry layouts or Scroll-driven animations.

Is this skill useful for CSS-in-JS users?

Yes, while it focuses on CSS syntax, the patterns for Container Queries, modern color, and layout logic are directly applicable to any styling workflow.

Modern CSS Specialist

Name: Modern CSS Specialist
Author: paulirish

bypaulirish

•

4,298

Design Tools

Implement cutting-edge, high-performance web styling and layouts using the latest CSS specifications and best practices.

About

The Modern CSS skill provides Claude with deep, specialized knowledge of the evolving web styling landscape. It enables the creation of resilient, future-proof interfaces by leveraging modern features like Container Queries, OKLCH color spaces, and Scroll-driven animations. This skill is ideal for developers looking to move away from legacy layout hacks, implement sophisticated typography with text-wrap and text-box trim, or build complex interactive components like tooltips and modals using native APIs like Anchor Positioning and the Popover API.

Key Features

Native UI component implementation using Dialog, Popover, and CSS Anchor Positioning.
Sophisticated typography control including fluid type and optical text-box trimming.
4,298 GitHub stars
High-performance animations with View Transitions and Scroll-driven timelines.
Advanced color management with OKLCH, light-dark() functions, and relative color syntax.
Component-based responsive design using Container Queries and Subgrid.

Use Cases

Replacing heavy JavaScript-based UI components with native, accessible CSS-first alternatives.
Refactoring legacy CSS architectures into organized Cascade Layers and modern properties.
Building responsive, themeable design systems that utilize P3 color gamuts and dynamic viewport units.

About

Key Features

Native UI component implementation using Dialog, Popover, and CSS Anchor Positioning.
Sophisticated typography control including fluid type and optical text-box trimming.
4,298 GitHub stars
High-performance animations with View Transitions and Scroll-driven timelines.
Advanced color management with OKLCH, light-dark() functions, and relative color syntax.
Component-based responsive design using Container Queries and Subgrid.

Use Cases

Replacing heavy JavaScript-based UI components with native, accessible CSS-first alternatives.
Refactoring legacy CSS architectures into organized Cascade Layers and modern properties.
Building responsive, themeable design systems that utilize P3 color gamuts and dynamic viewport units.