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name: Frontend CSS description: Write and maintain CSS following project conventions using consistent methodologies like Tailwind CSS, BEM, CSS modules, or utility classes, while creating distinctive, aesthetically excellent designs. Use this skill when writing CSS styles, applying Tailwind utility classes, creating custom CSS, working with styling files (*.css, *.scss, .module.css, globals.css, tailwind.config.), maintaining design systems and design tokens, defining CSS variables for colors and spacing, implementing typography styles with unique font choices, creating atmospheric backgrounds and depth, adding animations and micro-interactions, avoiding framework style overrides, avoiding generic "AI slop" aesthetics (purple gradients, Inter/Roboto everywhere, cookie-cutter designs), optimizing CSS for production with purging and tree-shaking, or ensuring consistent styling patterns across the application. Apply this skill when styling components, refactoring CSS code, setting up design systems, choosing fonts and colors, creating animations, or reviewing styling approaches for consistency, maintainability, and aesthetic excellence.

Frontend CSS

When to use this skill

• When writing or modifying CSS files (e.g., *.css, *.scss, *.module.css, globals.css, tailwind.config.*)
• When applying Tailwind CSS utility classes to components
• When using CSS methodologies (BEM, utility classes, CSS modules, styled-components, etc.)
• When creating custom CSS or extending framework styles
• When maintaining design systems and design tokens (colors, spacing, typography)
• When defining CSS variables or theme configurations
• When choosing fonts and typography (avoiding generic defaults like Inter, Roboto, Arial)
• When selecting color schemes and creating cohesive aesthetics
• When implementing animations, transitions, and micro-interactions
• When creating atmospheric backgrounds (gradients, patterns, depth)
• When avoiding generic "AI slop" aesthetics (purple gradients, cookie-cutter designs)
• When avoiding or refactoring excessive style overrides
• When optimizing CSS for production (purging unused styles, tree-shaking)
• When ensuring consistent styling patterns across the application
• When implementing responsive styles and breakpoints
• When working with CSS-in-JS solutions
• When reviewing styling approaches for maintainability, consistency, and aesthetic excellence

This Skill provides Claude Code with specific guidance on how to adhere to coding standards as they relate to how it should handle frontend CSS.

Instructions

For details, refer to the information provided in these files:

Technical Best Practices

frontend CSS

Aesthetic Excellence & Design Philosophy

frontend aesthetics - CRITICAL: Read this file to avoid generic "AI slop" designs. Follow typography, color, motion, and background guidelines to create distinctive, memorable designs.