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CSS Native Animations

Build scroll-driven animations, page transitions, and popover effects with modern CSS only — no GSAP or Framer Motion needed.

Design & UIIntermediate★ 330⑂ 27AI score 9/10Last updated: Jul 31, 2026

What it does

  • Gives ready-to-use patterns for scroll-driven animations (animation-timeline: scroll() / view()) and animation-range.
  • Covers the View Transitions API for both SPA and MPA, @starting-style, transition-behavior: allow-discrete, CSS anchor positioning, and container-query-driven animations.
  • Includes visual technique recipes: clip-path reveals, backdrop-filter glass, mix-blend-mode, mesh and conic gradients.
  • Provides a decision table for when native CSS is enough vs. when to reach for GSAP or Framer Motion.
  • Lists concrete anti-patterns with reasons (no transition: all, no animating layout properties, always add @supports fallbacks).

Who it's for

  • Frontend developers trimming animation libraries out of their bundle.
  • UI engineers who want to adopt modern CSS features safely in production.
  • Anyone animating dialogs, popovers, and tooltips without JS timing hacks.

Examples

  1. "Add a scroll progress bar with zero JS" → generates a scroll(root block) timeline.
  2. "Make the card image morph into the detail page hero" → sets up cross-document view-transition-name pairs.
  3. "My modal fade-out is skipped when it closes" → applies @starting-style plus allow-discrete.

· · · Install guide · · ·

Try it now, no install

Paste this into Claude to use the skill without installing anything.

Read the instructions in this file and follow them to help me:
https://raw.githubusercontent.com/AThevon/genjutsu/HEAD/skills/_jutsu/css-native/SKILL.md

What I want: (describe your task here)

If Claude can't open the link, open it yourself and paste the contents instead.

↓ If it works for you, download the ZIP below and install it. Then it runs on its own — no pasting each time.

Install in the Claude app (no terminal)
  1. Download the ZIP with the button below.
  2. In Claude, open Settings → Capabilities and turn on 'Code execution and file creation'. (one time)
  3. Go to Customize → Skills → + → 'Upload a skill' and upload the ZIP.
↓ Download ZIP
Install in Claude Code

Let Claude do it — paste this into Claude Code

Install the skill I found on Claude Skill Mart.
Copy the skills/_jutsu/css-native folder from the GitHub repo AThevon/genjutsu into my ~/.claude/skills/css-native/.
When it's done, tell me in one line what this skill can do.

Install with a command instead

git clone https://github.com/AThevon/genjutsu.git /tmp/genjutsu && mkdir -p ~/.claude/skills && cp -r /tmp/genjutsu/skills/_jutsu/css-native ~/.claude/skills/

⚠ This is a third-party skill. Check the source repository before installing.

  1. Open a terminal.
  2. Clone the repo: git clone https://github.com/AThevon/genjutsu.git /tmp/genjutsu
  3. Create the skills folder: mkdir -p ~/.claude/skills
  4. Copy the skill: cp -r /tmp/genjutsu/skills/_jutsu/css-native ~/.claude/skills/
  5. Confirm references/modern-css.md came along — it holds the browser-support and fallback tables.
  6. Restart Claude Code and ask something like "build a scroll-driven reveal in pure CSS" to confirm the skill triggers.
View source on GitHub ↗License: MIT