Skip to content
TrustedSkillsbeta
Back to all skills

Modern Css

Checked
paulirish·vlatest·frontend

Generates clean, semantic, and responsive CSS code snippets based on design descriptions, leveraging modern best practices.

Repository

Install on your platform

Showing Claude Code. One command installs this skill into any of the agents below.

  1. 1

    Run this in your project

    terminal
    $ npx skills add paulirish/dotfiles --skill modern-css -a claude-code

  2. Uses the open-source skills CLI and needs Node.js. Add -g to install it for your user instead of this project.

What we know about this skill

Publisher

paulirish

Taken from the source listing. We haven't verified who controls this account.

Install target

Live repository

Not pinned. Installing fetches whatever the repository holds at the time you run the command.

No human has reviewed this code. The checks below are a static scan of the files at one commit — nobody has run this skill or judged whether it works. A skill runs with whatever access you give your agent, so read the source before you install it.

Automated safety checks

scanned

This skill passed all 6 checks. We read its files at one commit and looked for the things that make a skill dangerous to run — not for whether it works.

  • Declares what it does: passed

    SKILL.md parses and declares a name and a description.

    SKILL.md exists, its frontmatter parses, and it declares a name and a description.

  • No undeclared network calls: passed

    Makes no network calls.

    Every host the skill dials — from its scripts, its config endpoints or the commands it tells the agent to run — is either well-known package and API infrastructure or declared in its own frontmatter. Links in documentation are not counted.

  • No obfuscated payloads: passed

    No encoded or obfuscated payloads.

    No base64, hex or compressed blob is decoded and then executed, and no encoded shell commands.

  • No credential access: passed

    Reads no keys, tokens, keychains or credential files.

    Neither the code nor the SKILL.md instructions read SSH keys, cloud credentials, keychains, token stores, browser cookie databases or dotfiles that hold secrets.

  • No pipe-to-shell installers: passed

    No pipe-to-shell or download-and-run installers.

    No `curl … | sh` pattern, in the code or in the instructions, that runs code fetched at run time.

  • Pinned to a commit: passed

    Scanned paulirish/dotfiles at 54ab8aeee5.

    The exact upstream commit SHA that was scanned is recorded, so the result refers to specific bytes.

Commit
54ab8aeee5
Manifest
agents/skills/modern-css/SKILL.md
Scanned
2 files, 1,463 lines
This is a static scan, not a review. It reads the skill's files; it does not run them, and it cannot tell you whether the skill is any good or whether the code does what its description says. A skill runs with whatever access you give your agent.
What each check looks for →

About this skill

modern-css

What it does

This skill equips AI agents with the ability to generate, debug, and optimize code using contemporary CSS standards. It enables the creation of responsive layouts, advanced animations, and maintainable stylesheets without relying on legacy syntax or external preprocessors.

When to use it

  • Responsive Design: Building interfaces that adapt fluidly across mobile, tablet, and desktop viewports.
  • Modern Syntax Adoption: Implementing features like CSS Grid, Flexbox, custom properties (variables), and logical properties.
  • Performance Optimization: Reducing bundle size and improving render times by leveraging native browser capabilities instead of heavy libraries.
  • Accessibility Enforcement: Ensuring styles meet WCAG guidelines through proper contrast ratios and focus management.

Key capabilities

  • Generates valid CSS3 and CSS4 syntax compliant with current browser support.
  • Implements complex layouts using Grid and Flexbox without JavaScript dependencies.
  • Manages theming via CSS custom properties (variables) for dynamic styling.
  • Applies modern selectors, pseudo-elements, and media queries for precise targeting.

Example prompts

  • "Create a responsive navigation bar using only modern CSS that collapses on mobile devices."
  • "Write a CSS snippet to animate a button hover effect using @keyframes and logical properties."
  • "Optimize this stylesheet by converting hardcoded values into CSS custom properties."

Tips & gotchas

Ensure the target environment supports modern browsers, as some advanced features may require polyfills for older versions. Always test generated styles in real devices to verify rendering consistency across different operating systems.