entrance-animations
Use when elements need to appear on screen - page loads, modals opening, items being added, content reveals, or any "coming into view" animation.
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Install
Works with every agent the skills CLI supports.
npx skills add https://github.com/dylantarre/animation-principles --skill entrance-animations- 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 entrance-animations 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.
Entrance Animations
Apply Disney's 12 principles when bringing elements into view.
Principle Application
Squash & Stretch: Scale from 95% to 100% on entry. Elements feel elastic, not rigid.
Anticipation: Start slightly below/smaller than final position. A -10px offset before sliding up creates expectation.
Staging: Enter from the direction of user attention. New list items from the top, modals from center, sidebars from their edge.
Straight Ahead vs Pose-to-Pose: Use pose-to-pose. Define clear start state (invisible, offset) and end state (visible, positioned).
Follow Through & Overlapping: Child elements should lag slightly. Container enters first, content 50-100ms after.
Slow In/Slow Out: Use ease-out for entrances. Fast start, gentle landing: cubic-bezier(0, 0, 0.2, 1).
Arcs: Combine Y and X movement. Don't just fade - slide in on a subtle curve.
Secondary Action: Pair fade with scale. Opacity 0→1 while scaling 0.95→1 adds depth.
Timing:
- Quick entrances: 150-200ms (toasts, tooltips)
- Standard entrances: 200-300ms (modals, cards)
- Dramatic reveals: 300-500ms (hero sections, page transitions)
Exaggeration: Scale can start at 0.8 for dramatic effect, 0.95 for subtle polish.
Solid Drawing: Maintain consistent 3D space. Elements entering from "behind" should scale up; from sides should slide.
Appeal: Entrances should feel welcoming. Avoid jarring pops - everything deserves an introduction.
Timing Recommendations
| Element Type | Duration | Easing | Delay Pattern |
|---|---|---|---|
| Toast/Alert | 150ms | ease-out | None |
| Modal | 250ms | ease-out | Content +50ms |
| Card/Item | 200ms | ease-out | None |
| List Items | 200ms | ease-out | Stagger 50ms |
| Page Section | 300ms | ease-out | Stagger 100ms |
| Hero Content | 400ms | ease-out | Stagger 150ms |
Implementation Pattern
.entering {
animation: entrance 250ms cubic-bezier(0, 0, 0.2, 1) forwards;
}
@keyframes entrance {
from {
opacity: 0;
transform: translateY(10px) scale(0.98);
}
to {
opacity: 1;
transform: translateY(0) scale(1);
}
}
Stagger Formula
For multiple items: delay = index * 50ms, cap at 500ms total sequence time.
Never exceed 5 items in a stagger sequence without user-initiated action.
FAQ
What does the entrance-animations skill do?
Use when elements need to appear on screen - page loads, modals opening, items being added, content reveals, or any "coming into view" animation.
How do I install entrance-animations?
Run npx skills add https://github.com/dylantarre/animation-principles --skill entrance-animations 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/entrance-animations/ (personal) or .claude/skills/entrance-animations/ (project).
Which AI agents can use entrance-animations?
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 entrance-animations 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 entrance-animations?
It is published by dylantarre in dylantarre/animation-principles. It has 527 recorded installs.
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