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Transitions.devby Jakubantalik

Transitions.dev Skill.

Apply component-specific CSS transitions and semantic motion tokens.

  • Transitions
  • Web Animation
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Source Review · transitions-devSKILL.md
Task Apply component-specific CSS transitions and semantic motion tokens. Produces A selected transition recipe with its required CSS variables. Before You Start Provide the component's markup, styles and state handling, plus any existing motion tokens. Review the custom license for your intended use before adapting a recipe; redistribution and template uses have specific conditions.
Editorial summary · source reviewed 2026-11-02 · not a generated example

01 What It Does

Apply component-specific CSS transitions and semantic motion tokens

Explore CSS transition recipes for menus, modals, text and controls, with semantic tokens, state hooks and repeat-interaction checks.

Source-based workflowNot an execution benchmark

The Working Approach

transitions-dev supplies portable CSS transition recipes with namespaced selectors and semantic motion variables. It matches the visible component to a recipe, such as a trigger-anchored dropdown, a modal, changing text or a sliding tab indicator. The implementation connects the documented state hooks to the application's actual behavior.

The Skill also offers review and refinement routes. Review locates potential uses without editing; refinement maps ad-hoc values to tokens according to their meaning. A close animation is matched to a close-duration token because of its purpose, rather than because the existing number happens to be nearby.

Expected Deliverables

  • A selected transition recipe with its required CSS variables.
  • Documented class or attribute hooks connected to the component.
  • A file-level review or semantic-token refinement proposal.
See the Example Brief

From Brief to Review

  1. 01
    Match the component

    Inspect the element and state change. Distinguish an anchored menu from a centered modal, or a text swap from a moving page.

  2. 02
    Add tokens and state hooks

    Use the shared variable block once or the selected recipe's variables. Preserve close cleanup, replay handling and any required JavaScript orchestration.

  3. 03
    Exercise repeat behavior

    Open, close and reopen the component. Check the reduced-motion branch and verify that variable-driven timings remain synchronized with cleanup logic.

02 When to Use It

When to Use It

Provide the component's markup, styles and state handling, plus any existing motion tokens. Review the custom license for your intended use before adapting a recipe; redistribution and template uses have specific conditions.

A Good Fit

  • A component needs a defined transitionThe recipes connect CSS behavior to recognizable UI states rather than an abstract animation request.
  • Timing values have become inconsistentThe refinement route suggests semantic tokens based on the action each duration serves.

Limits to Check

  • The library has redistribution limitsThe Skill's custom license allows personal and commercial product use, but prohibits republishing the collection or a substantial part as a competing transitions library, motion pack or animation kit. Templates and themes have additional terms; the repository's tooling-only MIT license does not cover this Skill.
  • Hooks still need integrationA snippet does not automatically supply correct application state, focus management or the surrounding component behavior.

Bring These Inputs

  • Component codeProvide the relevant markup, styles and state implementation.
  • Interaction intentSpecify the opening, closing, swapping or feedback event.
  • Existing motion systemInclude current tokens, theme behavior and any shared variable block already installed.

03 Decisions That Matter

Decisions That Matter

  1. Semantic tuning

    Named durations and distances express how a component moves.

  2. Small component scope

    The source favors targeted edits and avoids pulling in a general motion library.

  3. Repeatable interactions

    Cleanup and replay rules address failures that appear only on the second interaction.

04 Try a Focused Brief

Try a Focused Brief

The example brief below has not been tested. Check the skill’s setup before using it.

Review the Source and Setup

Provide the relevant markup, styles and state implementation.

Upstream Source File
https://github.com/Jakubantalik/transitions.dev/blob/e3aefb554d8fd2cb3e91e773e82a0f2d5a4f82a0/skills/transitions-dev/SKILL.md

The reference below opens the upstream instructions. Review the repository setup before using them; it is not an installation command.

Start With One Deliverable

Adapt the scope, source material and constraints in this brief before running the skill.

Example Brief
Use transitions-dev to improve the account dropdown in my existing app. Inspect the trigger, menu state and current CSS before choosing a recipe. Make the menu grow from its trigger, preserve the project's keyboard and focus behavior, and use semantic motion variables without duplicating a root block already present. Check rapid open-close-open interaction and confirm the closing class is cleaned up. Keep the reduced-motion branch and light/dark themes intact. Return the targeted changes and explain which state hooks were connected; do not redesign the menu contents or unrelated components.

Inspect the Result

Check the actual output against these observable criteria.

  • Test closing cleanup and repeated or interrupted activation.
  • Check token imports are not duplicated and timing reads match CSS.
  • Exercise reduced motion, focus behavior and both theme treatments.

OpenDesign provides a local design workspace for coding agents. This listing does not mean the skill is bundled or that its external tools, credentials and software dependencies are included.

Download OpenDesignRead the Quickstart

05 Source and License

Source and License

This page describes the pinned source revision linked below. Upstream behavior and requirements can change.

Source Owner
Jakubantalik
Repository
Jakubantalik/transitions.dev
Skill File
SKILL.md
License
LicenseRef-Transitions-dev
Reviewed Snapshot
2026-11-02 · e3aefb554d8f
Editorial Source Summary
Apply component-specific CSS transitions and semantic motion tokens.

Original summary by OpenDesign, based on the linked source. Repository stars are a dated popularity signal, not skill usage or a quality score.

06 Questions Before You Start

Questions Before You Start

Does it require a JavaScript animation framework?

The recipes use CSS and, where needed, small state-orchestration snippets. The source does not require a general motion framework.

What does refine change?

It first proposes replacements for ad-hoc motion values based on semantic usage. Values with no matching token meaning are left alone.

Why might an animation fail on the second open?

The source highlights leftover close-state classes and missing replay reflow as common causes. A first-open screenshot will not reveal those failures.

OpenDesign

Keep Your Brief and Design Work Together.

Keep your brief, source material and design work together in a local workspace. Check the skill’s own setup before adding it to your workflow.

Download OpenDesignBrowse Design Skills
Upstream Source File
https://github.com/Jakubantalik/transitions.dev/blob/e3aefb554d8fd2cb3e91e773e82a0f2d5a4f82a0/skills/transitions-dev/SKILL.md