ui-animation
Guidelines and examples for UI motion and animation. Use when designing, implementing, or reviewing motion, easing, timing, reduced-motion behaviour, CSS transitions, keyframes, framer-motion, or spring animations.
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Install
Works with every agent the skills CLI supports.
npx skills add https://github.com/joelhooks/joelclaw --skill ui-animation- 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 ui-animation 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.
UI Animation
Core rules
- Animate to clarify cause/effect or add deliberate delight.
- Keep interactions fast (200-300ms; up to 1s only for illustrative motion).
- Never animate keyboard interactions (arrow-key navigation, shortcut responses, tab/focus).
- Prefer CSS; use WAAPI or JS only when needed.
- Make animations interruptible and input-driven.
- Honor
prefers-reduced-motion(reduce or disable).
What to animate
- For movement and spatial change, animate only
transformandopacity. - For simple state feedback,
color,background-color, andopacitytransitions are acceptable. - Never animate layout properties; never use
transition: all. - Avoid
filteranimation for core interactions; if unavoidable, keep blur <= 20px. - SVG: apply transforms on a
<g>wrapper withtransform-box: fill-box; transform-origin: center. - Disable transitions during theme switches.
Spatial and sequencing
- Set
transform-originat the trigger point. - For dialogs/menus, start around
scale(0.85-0.9); avoidscale(0). - Stagger reveals <= 50ms.
Easing defaults
- Enter and transform-based hover:
cubic-bezier(0.22, 1, 0.36, 1). - Move:
cubic-bezier(0.25, 1, 0.5, 1). - Simple hover colour/background/opacity:
200ms ease. - Avoid
ease-infor UI (feels slow).
Accessibility
- If
transformis used, disable it inprefers-reduced-motion. - Disable hover transitions on touch devices via
@media (hover: hover) and (pointer: fine).
Performance
- Pause looping animations off-screen.
- Toggle
will-changeonly during heavy motion and only fortransform/opacity. - Prefer
transformover positional props in animation libraries. - Do not animate drag gestures using CSS variables.
Reference
- Snippets and practical tips: examples.md
Workflow
- Start with the core rules, then pick a reference snippet from examples.md.
- Keep motion functional; honor
prefers-reduced-motion. - When reviewing, cite file paths and line numbers and propose concrete fixes.
FAQ
What does the ui-animation skill do?
Guidelines and examples for UI motion and animation. Use when designing, implementing, or reviewing motion, easing, timing, reduced-motion behaviour, CSS transitions, keyframes, framer-motion, or spring animations.
How do I install ui-animation?
Run npx skills add https://github.com/joelhooks/joelclaw --skill ui-animation 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/ui-animation/ (personal) or .claude/skills/ui-animation/ (project).
Which AI agents can use ui-animation?
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 ui-animation 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 ui-animation?
It is published by joelhooks in joelhooks/joelclaw. It has 57 recorded installs.
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