What is PixelPilot uiux-motion.instructions.md?

Guidance for designing animations, transitions, and loading states in user interfaces. It covers when to use CSS, GSAP, or Motion and how to keep movement smooth.

It supports decisions about hover effects, entrances, staggered sequences, accordions, parallax scrolling, skeleton screens, and page transitions.

It helps avoid slow, distracting, or jerky animations by matching the technique to the interaction and prioritising properties that are cheaper for browsers to animate.

How dev-lou/PixelPilot configures GitHub Copilot

Reuse

Borrowing it

Nothing to install: this file belongs to dev-lou/PixelPilot. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/dev-lou/PixelPilot/main/vscode/.github/instructions/uiux-motion.instructions.md

Clone the repo

git clone --depth 1 https://github.com/dev-lou/PixelPilot

Made for: GitHub Copilot.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/dev-lou/pixelpilot/uiux-motion/github.svg)](https://agentmods.dev/instructions/dev-lou/pixelpilot/uiux-motion)

Your own site

<a href="https://agentmods.dev/instructions/dev-lou/pixelpilot/uiux-motion"><img src="https://agentmods.dev/badge/instructions/dev-lou/pixelpilot/uiux-motion/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/instructions/dev-lou/pixelpilot/uiux-motion"><img src="https://agentmods.dev/badge/instructions/dev-lou/pixelpilot/uiux-motion.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 5,965 This file is loaded in full into every session.

When invoked 5,965 The same file — it is already loaded in full.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.05965	$0.05965
Opus 5.5	$0.02386	$0.02386
Sonnet 5.5	$0.01193	$0.01193
Haiku 4.5	$0.00596	$0.00596

Measured 2mo ago against content hash 67f7be8283a1, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

PixelPilot uiux-motion.instructions.md scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

vscode/.github/instructions/uiux-motion.instructions.md · 570 lines

How it starts

The opening of the file, as written. The whole thing — 570 lines — stays where its author put it; the contents beside it link to each section on GitHub.

UI/UX Motion, Animation & Loading States 2026

Per-language animation systems, GSAP vs CSS decision rules, spring physics, kinetic typography, skeleton UX, loading states, view transitions, performance tiers.

THE GOLDEN RULE — Performance First

Only ever animate transform and opacity. These are GPU-composited — zero layout reflow, zero paint, zero jank. Everything else causes dropped frames.

S-Tier (GPU, 60fps): transform, opacity
C-Tier (use sparingly): filter, clip-path, border-radius
D-Tier (NEVER animate): width, height, top, left, padding, margin, background-color*
*background-color is fine for micro-interactions but not continuous/looping animations

DECISION TREE — CSS vs GSAP vs Motion

Need animation?
├─ Simple state (hover, focus, show/hide, toggle)?
│   └─ CSS transition — always. Zero overhead.
├─ Entrance on scroll?
│   ├─ Vanilla → AOS (in CDN) or CSS scroll-timeline
│   └─ React → Motion whileInView
├─ Complex sequence / stagger / timeline?
│   └─ GSAP timeline
├─ height:auto expand/collapse (accordion)?
│   └─ GSAP — CSS literally cannot do height:auto
├─ Scroll cinematic (parallax, pin, scrub)?
│   └─ GSAP + ScrollTrigger
├─ React page/route transition?
│   └─ View Transitions API or Motion AnimatePresence
└─ Physics spring (bouncy, drag)?
    └─ CSS spring easing or Motion (React)

PER-LANGUAGE ANIMATION SYSTEM

Token Values by Language

Token	Luxury	Premium	Minimalist	Expressive	Warm	Technical
`--dur-micro`	150ms	100ms	80ms	60ms	120ms	60ms
`--dur-base`	500ms	300ms	250ms	180ms	350ms	150ms
`--dur-slow`	900ms	600ms	500ms	300ms	700ms	250ms
Spring/bounce?	Never	Subtle	Never	Strong	Medium	Never
Stagger delay	120ms	60ms	80ms	40ms	80ms	20ms
Entrance travel	32px	20px	12px	16px	20px	8px
Entrance blur	0px	0px	0px	8px	0px	0px
Kinetic type?	Slow reveal	Subtle	No	Fast scramble	No	No

Read the full file on GitHub · 570 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

2mo ago First seen · 570 lines · 5,965 tokens per session scan A 67f7be8283a1

Subscribe to this mod's changes

PixelPilot uiux-motion.instructions.md is an instructions file published in the GitHub repository dev-lou/PixelPilot (2 stars, last pushed 7mo ago), licensed MIT. It adds 5,965 tokens to every session, about $0.0239 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Creative and media Frontend ai-prompts copilot cursor-rules design-system developer-tools

PixelPilot uiux-motion.instructions.md next to 6 instructions from other repositories
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PixelPilot: Instructions file for GitHub Copilot