css-expert

Guide teams toward modern CSS practices with cascade layers and design tokens.

Updated Jan 2, 2026

Search Tags:#css #responsive-design #design-tokens #container-queries #oklch #cascade-layers

One-click install

npx skills add https://github.com/dannysmith/claude-marketplace --skill css-expert

Or copy as Structured Prompt for Agent▼

Please help me install this Agent Skill.
Skill: css-expert
Source: https://github.com/dannysmith/claude-marketplace/tree/main/plugins/css-expert/skills/css-expert
Command: npx skills add https://github.com/dannysmith/claude-marketplace --skill css-expert

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This Skill guides teams toward modern CSS practices to reduce complexity, improve maintainability, and enable consistent theming with minimal JS.

Core Features & Use Cases

Cascade layers and design tokens to organize styles and prevent specificity wars
OKLCH color system with light-dark theming and relative colors for scalable theming
Container queries and defensive CSS patterns for responsive, accessible components
Practical patterns for typography, layout, and components to ship robust UI quickly

Quick Start

Read Foundation & Architecture to understand layers and tokens, then apply a base layer and create a component-ready CSS system with tokens and container queries.