web-motion-design
Use when building CSS animations, JavaScript transitions, React/Vue motion, or any browser-based animation work.
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Install
Works with every agent the skills CLI supports.
npx skills add https://github.com/dylantarre/animation-principles --skill web-motion-design- 01
Install
Run the command in your project. The CLI asks which agents to install for.
- 02
Describe the task
Ask your agent for something this skill covers. It loads web-motion-design automatically when relevant.
- 03
Review the result
The agent follows the SKILL.md steps, scripts and references bundled with the skill.
SKILL.md
The instructions your agent reads when the skill is triggered.
Web Motion Design
Apply Disney's 12 animation principles to CSS, JavaScript, and frontend frameworks.
Quick Reference
| Principle | Web Implementation |
|---|---|
| Squash & Stretch | transform: scale() on interaction states |
| Anticipation | Slight reverse movement before action |
| Staging | Focus user attention with motion hierarchy |
| Straight Ahead / Pose to Pose | JS frame-by-frame vs CSS keyframes |
| Follow Through / Overlapping | Staggered child animations, elastic easing |
| Slow In / Slow Out | ease-in-out, cubic-bezier curves |
| Arc | motion-path or bezier translate transforms |
| Secondary Action | Shadows, glows responding to primary motion |
| Timing | Duration: micro 100-200ms, standard 200-400ms |
| Exaggeration | Scale beyond 1.0, overshoot animations |
| Solid Drawing | Consistent transform-origin, 3D perspective |
| Appeal | Smooth 60fps, purposeful motion design |
Principle Applications
Squash & Stretch: Apply scaleY compression on button press, scaleX stretch on hover. Keep volume constant—if you compress Y, expand X slightly.
Anticipation: Before expanding a dropdown, shrink it 2-3% first. Before sliding content left, move it 5px right.
Staging: Dim background elements during modal focus. Use motion to direct eye flow—animate important elements first.
Straight Ahead vs Pose to Pose: Use CSS @keyframes for predictable, repeatable animations (pose to pose). Use JavaScript/GSAP for dynamic, physics-based motion (straight ahead).
Follow Through & Overlapping: Child elements should complete movement after parent stops. Use animation-delay with decreasing values for natural stagger.
Slow In / Slow Out: Never use linear for UI motion. Standard easing: cubic-bezier(0.4, 0, 0.2, 1). Enter: cubic-bezier(0, 0, 0.2, 1). Exit: cubic-bezier(0.4, 0, 1, 1).
Arc: Elements in nature move in arcs, not straight lines. Use offset-path or combine X/Y transforms with different easings.
Secondary Action: Button shadow grows/blurs on hover. Icon inside button rotates while button scales. Background particles respond to primary element.
Timing: Micro-interactions: 100-200ms. Standard transitions: 200-400ms. Complex sequences: 400-700ms. Page transitions: 300-500ms.
Exaggeration: Hover states scale to 1.05-1.1, not 1.01. Error shakes move 10-20px, not 2px. Make motion noticeable but not jarring.
Solid Drawing: Maintain consistent transform-origin. Use perspective for 3D depth. Avoid conflicting transforms that create visual glitches.
Appeal: Target 60fps—use transform and opacity only when possible. Add subtle personality through custom easing curves. Motion should feel intentional.
Code Patterns
/* Elastic button with squash/stretch */
.button:active {
transform: scale(0.95, 1.05);
transition: transform 100ms cubic-bezier(0.4, 0, 0.2, 1);
}
/* Anticipation before expansion */
.dropdown-enter {
animation: dropdown-open 300ms cubic-bezier(0.34, 1.56, 0.64, 1);
}
@keyframes dropdown-open {
0% { transform: scaleY(0.98); opacity: 0; }
100% { transform: scaleY(1); opacity: 1; }
}
Performance Rules
- Animate only
transformandopacityfor GPU acceleration - Use
will-changesparingly and remove after animation - Prefer CSS over JavaScript when animation is predictable
- Test on low-powered devices
FAQ
What does the web-motion-design skill do?
Use when building CSS animations, JavaScript transitions, React/Vue motion, or any browser-based animation work.
How do I install web-motion-design?
Run npx skills add https://github.com/dylantarre/animation-principles --skill web-motion-design in your project. The skills CLI detects the agents you use and copies the skill into the right folder. For Claude Code you can also place the skill folder at ~/.claude/skills/web-motion-design/ (personal) or .claude/skills/web-motion-design/ (project).
Which AI agents can use web-motion-design?
Any agent that supports the open Agent Skills format (a folder with a SKILL.md file), including Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, Windsurf, Cline, OpenCode and more.
Is web-motion-design safe to install?
No partner security audit is available yet. Skills can run commands and scripts, so read the SKILL.md and any bundled files before installing.
Who maintains web-motion-design?
It is published by dylantarre in dylantarre/animation-principles. It has 1,349 recorded installs.
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