Skillshare UI Website Style
JetBrains/skills
Skillshare frontend design system for the React dashboard (ui/) and Docusaurus website (website/).
CSS Modules conventions, Stylelint rules, design tokens (spacing, colors, typography, border-radius), and patterns for the Opentrons monorepo.
Install CSS Modules
$ npx skills add Opentrons/opentrons --skill css-modules -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install Opentrons/opentrons css-modules --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/Opentrons/opentrons.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.cursor/skills/css-modules .claude/skills/css-modules && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "css-modules" agent skill from https://github.com/Opentrons/opentrons/tree/edge/.cursor/skills/css-modules into .claude/skills/css-modules/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "css-modules", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/Opentrons/opentrons/tree/edge/.cursor/skills/css-modulesType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add Opentrons/opentrons --skill css-modules -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install Opentrons/opentrons css-modules --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Opentrons/opentrons.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.cursor/skills/css-modules .agents/skills/css-modules && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "css-modules" agent skill from https://github.com/Opentrons/opentrons/tree/edge/.cursor/skills/css-modules into .agents/skills/css-modules/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "css-modules", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add Opentrons/opentrons --skill css-modules -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install Opentrons/opentrons css-modules --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Opentrons/opentrons.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.cursor/skills/css-modules .cursor/skills/css-modules && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "css-modules" agent skill from https://github.com/Opentrons/opentrons/tree/edge/.cursor/skills/css-modules into .cursor/skills/css-modules/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "css-modules", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/Opentrons/opentrons.git --path .cursor/skills/css-modules--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add Opentrons/opentrons --skill css-modules -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install Opentrons/opentrons css-modules --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Opentrons/opentrons.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.cursor/skills/css-modules .gemini/skills/css-modules && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "css-modules" agent skill from https://github.com/Opentrons/opentrons/tree/edge/.cursor/skills/css-modules into .gemini/skills/css-modules/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "css-modules", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install Opentrons/opentrons css-modulesInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add Opentrons/opentrons --skill css-modules -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/Opentrons/opentrons.git skills-src && mkdir -p .github/skills && cp -r skills-src/.cursor/skills/css-modules .github/skills/css-modules && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "css-modules" agent skill from https://github.com/Opentrons/opentrons/tree/edge/.cursor/skills/css-modules into .github/skills/css-modules/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "css-modules", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add Opentrons/opentrons --skill css-modules -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install Opentrons/opentrons css-modules --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Opentrons/opentrons.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.cursor/skills/css-modules .opencode/skills/css-modules && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "css-modules" agent skill from https://github.com/Opentrons/opentrons/tree/edge/.cursor/skills/css-modules into .opencode/skills/css-modules/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "css-modules", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
css-modules- GitHub stars
- 521
- Token cost
- ~2.2k tokens
- SKILL.md length
- 578 words
- Files
- 1
- Skills in repo
- 17
- Repo updated
- First seen
- Licence
- Apache-2.0
At a glance
CSS Modules conventions, Stylelint rules, design tokens (spacing, colors, typography, border-radius), and patterns for the Opentrons monorepo.
- Working with .module.css files
- SKILL.md covers File Naming, Class Naming, Importing in Components and Dynamic Styling with clsx, plus 8 more sections
- Calls make and pnpm
- Styling React components in app/
What it does
CSS Modules is an agent skill from Opentrons/opentrons. CSS Modules conventions, Stylelint rules, design tokens (spacing, colors, typography, border-radius), and patterns for the Opentrons monorepo. Use when working with .module.css files or styling React components in app/, components/, protocol-visualization/, protocol-designer/, or other JS packages.
Its SKILL.md is about 2.2k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in Frontend & Design, covering Design tokens, Typography and React components. The repository describes itself as: Software for writing protocols and running them on the Opentrons Flex and Opentrons OT-2. The licence is Apache-2.0.
When your agent uses it
- Working with .module.css files
- Styling React components in app/
- Protocol-visualization/
- Protocol-designer/
Example prompts
- “/css-modules”
What it can do on your machine
Read from SKILL.md and the folder at commit a14fef9. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
Shell commands in SKILL.md call:
makepnpm
From the folder's file list and the shell code blocks in SKILL.md.
Network
Links to these hosts (documentation or services it may open):
github.com
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
CSS Modules loads about 2.2k tokens when it runs. Until then it costs about 78 tokens; SKILL.md has 578 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
The full file from Opentrons/opentrons at commit a14fef9, republished under its Apache-2.0 licence (© Opentrons). 578 words, ~2,209 tokens.
Download SKILL.mdSave it as
.claude/skills/css-modules/SKILL.md (or your agent's skills folder).- name
- css-modules
- description
- CSS Modules conventions, Stylelint rules, design tokens (spacing, colors, typography, border-radius), and patterns for the Opentrons monorepo. Use when working with .module.css files or styling React components in app/, components/, protocol-visualization/, protocol-designer/, or other JS packages.
CSS Modules — Opentrons Conventions
File Naming
File names are lowercase, no separators, suffixed with .module.css, and match the component name:
ComponentName/
├── index.tsx
├── componentname.module.css
└── **tests**/
└── ComponentName.test.tsxExamples: navbar.module.css, labwarebutton.module.css, textareafield.module.css
Class Naming
Stylelint enforces the pattern /^[a-z0-9_]+$/ — snake_case only (lowercase letters, digits, underscores).
Use a component_element or element_modifier structure:
/* Base classes */
.button {
}
.slider_container {
}
.crumb_link {
}
/* State/modifier variants */
.button_active {
}
.textarea_error {
}
.title_text_center {
}
.crumb_link_inactive {
}Importing in Components
import styles from './componentname.module.css'
export function MyComponent(): JSX.Element {
return <div className={styles.wrapper}>content</div>
}Dynamic Styling with clsx
Use clsx for combining or conditionally applying classes:
import clsx from 'clsx'
import styles from './componentname.module.css'
export function MyButton({ isActive, isError }: Props): JSX.Element {
const className = clsx(styles.button, {
[styles.button_active]: isActive,
[styles.button_error]: isError,
})
return <button className={className}>Click</button>
}Design Tokens (CSS Custom Properties)
All tokens are defined in components/src/styles/global.css. Always use these variables instead of hard-coding values for colors, spacing, typography, and border-radius.
Spacing
| Variable | Value |
|---|---|
--spacing-2 | 0.125rem (2px) |
--spacing-4 | 0.25rem (4px) |
--spacing-6 | 0.375rem (6px) |
--spacing-8 | 0.5rem (8px) |
--spacing-10 | 0.625rem (10px) |
--spacing-12 | 0.75rem (12px) |
--spacing-16 | 1rem (16px) |
--spacing-20 | 1.25rem (20px) |
--spacing-24 | 1.5rem (24px) |
--spacing-32 | 2rem (32px) |
--spacing-40 | 2.5rem (40px) |
--spacing-44 | 2.75rem (44px) |
--spacing-48 | 3rem (48px) |
--spacing-60 | 3.75rem (60px) |
--spacing-68 | 4.25rem (68px) |
--spacing-80 | 5rem (80px) |
--spacing-120 | 7.5rem (120px) |
Colors
Core: --white (#fff), --black-90 (#16212d), --black-80 (#24313f), --black-70 (#39495b)
Grey: --grey-10 through --grey-60 (10, 20, 30, 35, 40, 50, 55, 60)
Blue: --blue-10 through --blue-60 (10, 20, 30, 35, 40, 50, 55, 60)
Purple: --purple-20 through --purple-60 (20, 30, 35, 40, 50, 55, 60)
Green: --green-20 through --green-60 (20, 30, 35, 40, 50, 60)
Red: --red-20 through --red-60 (20, 30, 35, 40, 50, 55, 60)
Yellow: --yellow-20 through --yellow-60 (20, 30, 35, 40, 50, 60)
Flex brand: --flex-20 through --flex-60 (20, 30, 35, 40, 50, 55, 60)
Semi-transparent white: --transparent-white-20 through --transparent-white-80 (20, 30, 50, 80)
Semi-transparent black: --transparent-black-10 through --transparent-black-80 (10, 20, 30, 40, 50, 60, 80)
transparent: --transparent
Some colors (green, purple) have touchscreen variants that activate when
components/src/styles/global.cssapplies the.enable_touchscreen_colorsclass. The default values are non-touchscreen.
Border Radius
--border-radius-2, --border-radius-4, --border-radius-8, --border-radius-12, --border-radius-16, --border-radius-40, --border-radius-full (pill/circle)
Typography
Font size: --font-size-9, --font-size-10, --font-size-11, --font-size-12, --font-size-13, --font-size-14, --font-size-15, --font-size-16, --font-size-18, --font-size-19, --font-size-20, --font-size-22, --font-size-23, --font-size-24, --font-size-26, --font-size-28, --font-size-32, --font-size-38, --font-size-39, --font-size-80
Font weight: --font-weight-light (300), --font-weight-regular (400), --font-weight-semi-bold (600), --font-weight-bold (700)
Line height: --line-height-12, --line-height-16, --line-height-18, --line-height-20, --line-height-24, --line-height-28, --line-height-36, --line-height-42, --line-height-48, --line-height-96
Show full SKILL.md (255 more words)Show less
Where to Use Tokens vs Explicit Values
| Property | Use token? | Example |
|---|---|---|
color, background-color, border-color | Yes | var(--blue-50) |
padding, margin, gap | Yes | var(--spacing-16) |
border-radius | Yes | var(--border-radius-8) |
font-size | Yes | var(--font-size-p) |
font-weight | Yes | var(--font-weight-semi-bold) |
line-height | Yes | var(--line-height-20) |
width, height, max-width, min-height | No — use explicit rem | 15rem, 100vh |
box-shadow | No — use px | 0 0 0 2px var(--blue-50) |
Unit Rules
- rem for all dimensions — divide design-spec px by 16 (
240px / 16 = 15rem) - px only for
box-shadowvalues and<img>tag dimensions - Prefer
paddingovermarginfor wrapper and container elements - Avoid complex
calc()expressions
State & Pseudo-Class Handling
.button:focus {
outline: none;
box-shadow: 0 0 0 2px var(--blue-50);
}
.button:hover:not(:disabled) {
background-color: var(--grey-10);
}
.button:disabled {
opacity: 0.5;
cursor: not-allowed;
}
.input:focus {
border-color: var(--blue-50);
}Always guard hover styles with :not(:disabled) on interactive elements.
CSS Modules Features
Composition
Stylelint allows the composes property for class composition:
.base_button {
padding: var(--spacing-8) var(--spacing-16);
border-radius: var(--border-radius-4);
}
.primary_button {
composes: base_button;
background-color: var(--blue-50);
color: var(--white);
}Global Selectors
Use :global() to target non-module classes (e.g., from React Router or third-party libraries):
.nav_link:global(.active) {
color: var(--blue-50);
}Stylelint Configuration
The repo uses stylelint-config-standard + stylelint-config-idiomatic-order (property ordering). Key enforced rules:
- Class selector pattern:
/^[a-z0-9_]+$/ - Max 4 decimal places for numbers (except dimension properties like
width,height,flex) - Standard CSS property ordering (idiomatic order)
@valueat-rule is still allowed but deprecated — avoid in new code
Tips: Common Stylelint Fixes
Zero lengths must have no unit (length-zero-no-unit):
/* ✖ Unexpected unit */
box-shadow: 0px 3px 6px rgb(0 0 0 / 23%);
/* ✔ Use bare 0 — no px/rem/etc. */
box-shadow: 0 3px 6px rgb(0 0 0 / 23%);Use modern rgb notation (color-function-alias-notation, color-function-notation):
/* ✖ rgba + comma-separated args are legacy */
box-shadow: 0 3px 6px rgba(0, 0, 0, 23%);
/* ✔ Prefer rgb with space-separated channels and / alpha */
box-shadow: 0 3px 6px rgb(0 0 0 / 23%);Linting and Formatting
# Lint all CSS
make lint-css
# Auto-fix all CSS
make format-css
# Lint a single file
pnpm stylelint path/to/componentname.module.css
# Auto-fix a single file
pnpm stylelint path/to/componentname.module.css --fixAlways run make lint-css and fix any issues before committing.
Legacy Patterns (Do Not Introduce)
components/src/styles/borders.module.css— old border tokens (--bd-radius-*,--bd-width-*,--shadow-lvl-*). Useglobal.csstokens instead.components/src/styles/typography.module.css— old typography tokens (--fs-*,--fw-*,--lh-*). Useglobal.csstokens instead.styled-components— the codebase is migrating away. Always use CSS Modules for new styles.@valuedeclarations — still parsed by stylelint but deprecated. Use CSS custom properties.
© Opentrons, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
Just SKILL.md in .cursor/skills/css-modules of Opentrons/opentrons.
Open the folder on GitHubat commit a14fef9
Compare with similar skills
CSS Modules next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| CSS Modules this skillOpentrons/opentrons | 521 | — | ~2.2k | Automated safety check: Pass | Apache-2.0 | |
| Skillshare UI Website StyleJetBrains/skills | 364 | — | ~3.1k | Automated safety check: Pass | None | |
| Tailwindcss Developmentanonaddy/anonaddy | 4.9k | 10 repos | ~865 | Automated safety check: Pass | MIT | |
| Design SystemOhh-889/skyroc | 795 | 11 repos | ~1.7k | Automated safety check: Pass | MIT | |
| Stitch Taste Design Systemgoogle-labs-code/stitch-skills | 8.4k | 15 repos | ~3.1k | Automated safety check: Pass | Apache-2.0 | |
| Scalar Design Systemscalar/scalar | 16k | — | ~2.7k | Automated safety check: Pass | MIT |
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Token architecture, component specifications, and slide generation.
- Official
Stitch Taste Design System
google-labs-code/stitch-skills
Generates a DESIGN.md design-language file for Google Stitch that encodes color, typography, layout, component behavior and motion rules to avoid generic AI-looking UI.
Scalar Design System
scalar/scalar
Scalar's design system — design tokens, theming (@scalar/themes), CSS variables, and the @scalar/components library.
Design Guide
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Paperclip UI design system guide for building consistent, reusable frontend components.
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Related
Categories
Questions about CSS Modules
What does CSS Modules do?
CSS Modules conventions, Stylelint rules, design tokens (spacing, colors, typography, border-radius), and patterns for the Opentrons monorepo. CSS Modules is an agent skill from Opentrons/opentrons. CSS Modules conventions, Stylelint rules, design tokens (spacing, colors, typography, border-radius), and patterns for the Opentrons monorepo.
When should I use CSS Modules?
CSS Modules fits situations like: working with .module.css files; styling React components in app/; protocol-visualization/; protocol-designer/.
How do I install CSS Modules in Claude Code?
Run `npx skills add Opentrons/opentrons --skill css-modules -a claude-code`. Or copy the skill folder (.cursor/skills/css-modules in Opentrons/opentrons) into .claude/skills/css-modules in your project. Claude Code loads it when a task matches its description.
How do I install CSS Modules in Codex?
Run `npx skills add Opentrons/opentrons --skill css-modules -a codex`. Or copy the skill folder (.cursor/skills/css-modules in Opentrons/opentrons) into .agents/skills/css-modules in your project. Codex loads it when a task matches its description.
Can I use CSS Modules in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add Opentrons/opentrons --skill css-modules -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/css-modules, .gemini/skills/css-modules, .github/skills/css-modules and .opencode/skills/css-modules in your project.
What does CSS Modules need to run?
Going by SKILL.md and its folder, CSS Modules needs the command-line tools its instructions call (make and pnpm).
Does CSS Modules access the network?
SKILL.md names 1 domain. As links in the text: github.com. This is read from the text; nothing was executed.
Is CSS Modules safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does CSS Modules use?
CSS Modules is published under the Apache-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does CSS Modules use?
About 2.2k tokens (SKILL.md is roughly 8.8k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to CSS Modules?
Skills that share tags, products or a category with CSS Modules: Skillshare UI Website Style (JetBrains/skills, 364 stars), Tailwindcss Development (anonaddy/anonaddy, 4.9k stars), Design System (Ohh-889/skyroc, 795 stars) and Stitch Taste Design System (google-labs-code/stitch-skills, 8.4k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains CSS Modules?
Opentrons (a GitHub organization) maintains it in Opentrons/opentrons, which has 521 GitHub stars. The repository holds 17 skills in this directory. The repository was last updated on October 7, 2026.
Source: Opentrons/opentrons on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.