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Agent skill

CSS Native

by AThevon in AThevon/genjutsu

Zero-dependency animations and visual techniques - scroll-driven, View Transitions, @starting-style, modern CSS.

Custom licenceAuto-check passedFrontend & Design

Install CSS Native

skills CLI
$ npx skills add AThevon/genjutsu --skill css-native -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install AThevon/genjutsu css-native --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/AThevon/genjutsu.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/_jutsu/css-native .claude/skills/css-native && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
css-native
GitHub stars
416
Used in
1 other repo
Token cost
~2.2k tokens
SKILL.md length
534 words
Files
2 (incl. references)
Skills in repo
20
Repo updated
First seen
Licence
Custom licence

At a glance

Zero-dependency animations and visual techniques - scroll-driven, View Transitions, @starting-style, modern CSS.

  • Tasks that involve Web animation and motion
  • SKILL.md covers When to Use CSS Native vs…, Scroll-Driven Animations, View Transitions API and @starting-style, plus 5 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

CSS Native is an agent skill from AThevon/genjutsu. Zero-dependency animations and visual techniques - scroll-driven, View Transitions, @starting-style, modern CSS.

Its SKILL.md is about 2.2k tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files, including reference files (for example `references/modern-css.md`).

It sits in Frontend & Design, covering Web animation and motion. The repository describes itself as: Creative coding skills for Claude Code, claude.ai and Cowork. Motion, micro-interactions and design systems across Web (GSAP, Motion, Three.js, CSS), Android (Jetpack Compose)…

When your agent uses it

  • Tasks that involve Web animation and motion

Example prompts

  • “/css-native”

What it can do on your machine

Read from SKILL.md and the folder at commit 1f518a7. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md (its code samples are css and javascript).

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    Links to these hosts (documentation or services it may open):

    • scroll-driven-animations.style

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

CSS Native loads about 2.2k tokens when it runs, and up to ~6.3k if it reads all its reference files. Until then it costs about 31 tokens; SKILL.md has 534 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~31
When it runs · the whole SKILL.md, loaded when a task matches
~2.2k
With references · SKILL.md plus every file in references/, read only if the agent opens them
~6.3k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 534 words (~2,244 tokens).

“Rule of thumb: if you can express it in a @keyframes + one animation-timeline, stay in CSS. The moment you need imperative control, sequence coordination, or runtime values - reach for a library.”

— opening of SKILL.md by AThevon, Custom licence
name
css-native
metadata.internal
true

Read the full SKILL.md on GitHub

Files

SKILL.md and 1 other file (references) in skills/_jutsu/css-native of AThevon/genjutsu.

  • SKILL.md
  • references/modern-css.md

Open the folder on GitHubat commit 1f518a7

Used in 1 other repository

We found 1 copy of this SKILL.md (exact, near-identical or edited) in other folders, from 1 other GitHub owner. This page covers the copy in AThevon/genjutsu, which our catalogue first saw on October 7, 2026.

Compare with similar skills

CSS Native next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

CSS Native compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
CSS Native this skillAThevon/genjutsu4161 repos~2.2kAutomated safety check: PassCustom licence
Impeccablebestofjs/bestofjs3.1k27 repos~2.6kAutomated safety check: PassMIT
GSAP ScrollTriggergreensock/gsap-skills16k5 repos~4.6kAutomated safety check: PassMIT
GSAP Core Animationgreensock/gsap-skills16k4 repos~3.7kAutomated safety check: PassMIT
Web Animation DesignbaptisteArno/typebot.io11k2 repos~2.7kAutomated safety check: PassCustom licence
Scroll World Landing Pageoso95/scroll-world9.7k1 repos~12kAutomated safety check: NotesMIT

Similar skills

  • Impeccable

    bestofjs/bestofjs

    A skill your agent uses when the user wants to design, redesign, shape, critique, audit, polish, clarify, distill, harden, optimize, adapt, animate, colorize, extract, or otherwise improve a…

    3.1k GitHub starsUsed in 27 repos~2.6k tokens
    Frontend & DesignAuto-check passed

  • GSAP ScrollTrigger

    greensock/gsap-skills

    Teaches an agent how to wire up GSAP's ScrollTrigger plugin for scroll-linked animation, pinned sections and scrub, including the start and end position syntax.

    16k GitHub starsUsed in 5 repos~4.6k tokens
    Frontend & DesignAuto-check passed

  • GSAP Core Animation

    greensock/gsap-skills

    Covers the GSAP core API for tweens, easing, staggers, defaults and matchMedia, and when to choose GSAP over CSS animations or other JavaScript animation libraries.

    16k GitHub starsUsed in 4 repos~3.7k tokens
    Frontend & DesignAuto-check passed

  • Web Animation Design

    baptisteArno/typebot.io

    Guides easing, timing and animation choices for UI motion, based on a web animation course, and reviews existing animations in a before-and-after table.

    11k GitHub starsUsed in 2 repos~2.7k tokens
    Frontend & DesignAuto-check passed

  • Scroll World Landing Page

    oso95/scroll-world

    Builds a scroll-driven landing page where a pre-rendered camera flies through connected AI-generated scenes, using Higgsfield for stills and video clips.

    9.7k GitHub starsUsed in 1 repo~12k tokens
    Frontend & DesignAuto-check: notes

  • Make Interfaces Feel Better

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    Design engineering principles for making interfaces feel polished.

    7.6k GitHub starsUsed in 10 repos~1.5k tokens
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More from AThevon/genjutsu

All 20 skills in this repo

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  • Design Audit

    AThevon/genjutsu

    Design audit checklist - motion gaps, accessibility, color consistency, responsive, performance.

    416 GitHub starsUsed in 1 repo~1.6k tokens
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  • UI UX Pro Max

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    UI/UX design-system intelligence - 84 styles, 192 palettes, 74 font pairings, 25 charts, 99 UX guidelines across 22 stacks (searchable dataset + CLI).

    416 GitHub stars~4.3k tokensUpdated 2 days ago
    Auto-check passed

  • Canvas Generative

    AThevon/genjutsu

    Algorithmic and generative art with Canvas 2D - particles, flow fields, noise, fractals, L-systems.

    416 GitHub starsUsed in 1 repo~2.1k tokens
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  • Compose Motion

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Categories

Questions about CSS Native

What does CSS Native do?

Zero-dependency animations and visual techniques - scroll-driven, View Transitions, @starting-style, modern CSS. CSS Native is an agent skill from AThevon/genjutsu. Zero-dependency animations and visual techniques - scroll-driven, View Transitions, @starting-style, modern CSS.

When should I use CSS Native?

CSS Native fits situations like: tasks that involve Web animation and motion.

How do I install CSS Native in Claude Code?

Run `npx skills add AThevon/genjutsu --skill css-native -a claude-code`. Or copy the skill folder (skills/_jutsu/css-native in AThevon/genjutsu) into .claude/skills/css-native in your project. Claude Code loads it when a task matches its description.

How do I install CSS Native in Codex?

Run `npx skills add AThevon/genjutsu --skill css-native -a codex`. Or copy the skill folder (skills/_jutsu/css-native in AThevon/genjutsu) into .agents/skills/css-native in your project. Codex loads it when a task matches its description.

Can I use CSS Native in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add AThevon/genjutsu --skill css-native -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/css-native, .gemini/skills/css-native, .github/skills/css-native and .opencode/skills/css-native in your project.

What does CSS Native need to run?

SKILL.md names no scripts, command-line tools or credentials: CSS Native is instructions for the agent only.

Does CSS Native access the network?

SKILL.md names 1 domain. As links in the text: scroll-driven-animations.style. This is read from the text; nothing was executed.

Is CSS Native safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does CSS Native use?

CSS Native has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.

How many tokens does CSS Native use?

About 2.2k tokens (SKILL.md is roughly 9k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 4.1k tokens, read only when the agent opens those files.

What are the alternatives to CSS Native?

Skills that share tags, products or a category with CSS Native: Impeccable (bestofjs/bestofjs, 3.1k stars), GSAP ScrollTrigger (greensock/gsap-skills, 16k stars), GSAP Core Animation (greensock/gsap-skills, 16k stars) and Web Animation Design (baptisteArno/typebot.io, 11k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains CSS Native?

AThevon (a GitHub user) maintains it in AThevon/genjutsu, which has 416 GitHub stars. The repository holds 20 skills in this directory. The repository was last updated on October 5, 2026.

Source: AThevon/genjutsu on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.