Css Expert

OrganizationPopular

RightNow-AI

css-expert

CSS expert for flexbox, grid, animations, responsive design, and modern layout techniques

Overview

Publisher	RightNow-AI
Repository	`openfang`
Skill name	`css-expert`
Stars	18.2K
Forks	2.3K
Bundled files	Instructions only
License	Apache-2.0
Links	Skill source Repository Homepage

Markdown instructions
A SKILL.md file the model loads on demand, so it only costs tokens when a request actually matches.
Works with any LLM
AI skills are plain Markdown, not provider-specific code, so this works with GPT, Claude, Gemini, Grok, or a local model.
Self-contained
Everything the model needs lives in the instructions — no extra files to sync.
Open source
Published by RightNow-AI on GitHub. Read the source before you install it.

Installation

Install the Css Expert AI skill in TypingMind to use it with any LLM, or drop it into another agent that reads SKILL.md.

Install in TypingMind

TypingMind installs a skill straight from its GitHub folder — it reads SKILL.md, bundles the resource files, and stores the result locally.

Open the app and go to Plugins → Skills.
Choose "Install from GitHub".
Paste the skill folder URL below and confirm.
Enable the skill in any chat where you want it available.

Store

Installed

Skills

Add skills

Import one or more skills from a public GitHub folder or a local .skill or .zip archive, or SKILL.md file.

From GitHub URLFrom .skill, .zip, or SKILL.md

GitHub repo or folder

https://github.com/RightNow-AI/openfang/tree/main/crates/openfang-skills/bundled/css-expert

Points to a single skill folder, or any folder that contains multiple skills. Public repos only.

CancelContinue

Plugins → Skills → Add skill → From GitHub URL, then paste the folder URL and press Continue.

Install in another agent

Any agent that reads the Agent Skills format can use this skill — copy the folder into that agent's skills directory.

Claude Code — .claude/skills

git clone --depth 1 https://github.com/RightNow-AI/openfang.git /tmp/openfang
mkdir -p .claude/skills
cp -r /tmp/openfang/crates/openfang-skills/bundled/css-expert .claude/skills/css-expert

Restart Claude Code after copying so it picks up the new skill.

Use it in TypingMind

Enable Css Expert in any TypingMind chat and the model takes it from there. Its name and description sit in the system prompt, and the moment a request matches, the model loads the full instructions itself — you never invoke it by hand, and it costs no tokens until it is actually used.

The model loads Css Expert on its own as soon as a request matches it.

Works with any AI model

AI skills are plain Markdown instructions rather than provider-specific code, so Css Expert is not tied to the model it was written for. Install it once in TypingMind and use it with GPT-5, Claude, Gemini, Grok, DeepSeek, Mistral, Llama, or a local model you run yourself — all on your own API keys.

Loaded only when it is needed
The system prompt carries just the name and description. The instructions are fetched on the first matching request, so an idle skill costs nothing.
Switch models mid-chat
Because the skill is instructions rather than code, changing model does not break it — the next model reads the same SKILL.md.

Skill instructions

This is the SKILL.md content the model loads. Read it before installing — a skill is instructions your model will follow.

CSS Expert

A front-end layout specialist with deep command of modern CSS, from flexbox and grid to container queries and cascade layers. This skill provides precise, standards-compliant guidance for building responsive, accessible, and maintainable user interfaces using the latest CSS specifications and best practices.

Key Principles

Use flexbox for one-dimensional layouts (rows or columns) and CSS Grid for two-dimensional layouts (rows and columns simultaneously)
Embrace custom properties (CSS variables) for theming, spacing scales, and any value that repeats or needs runtime adjustment
Design mobile-first with min-width media queries, layering complexity as viewport size increases
Prefer logical properties (inline-start, block-end) over physical ones (left, bottom) for internationalization-ready layouts
Leverage the cascade intentionally with @layer declarations to control specificity without resorting to !important

Techniques

Use flexbox justify-content and align-items for main-axis and cross-axis alignment; flex-wrap with gap for fluid card layouts
Define CSS Grid layouts with grid-template-areas for named regions, and auto-fit/auto-fill with minmax() for responsive grids without media queries
Create design tokens as custom properties on :root (--color-primary, --space-md) and override them in scoped selectors or media queries
Use @container queries to style components based on their parent container size rather than the viewport
Build animations with @keyframes and animation shorthand; prefer transform and opacity for GPU-accelerated, jank-free motion
Apply transitions on interactive states (hover, focus-visible) with appropriate duration (150-300ms) and easing functions
Use the :has() selector for parent-aware styling, :is()/:where() for grouping selectors with controlled specificity

Common Patterns

Holy Grail Layout: CSS Grid with grid-template-rows (auto 1fr auto) and grid-template-columns (sidebar content sidebar) for header/footer/sidebar page structures
Fluid Typography: clamp(1rem, 2.5vw, 2rem) for font sizes that scale smoothly between minimum and maximum values without breakpoints
Aspect Ratio Boxes: Use the aspect-ratio property directly instead of the legacy padding-bottom hack for responsive media containers
Dark Mode Toggle: Define color tokens as custom properties, swap them inside a prefers-color-scheme media query or a data-theme attribute selector

Pitfalls to Avoid

Do not use fixed pixel widths for layout containers; prefer percentage, fr units, or min/max constraints for fluid responsiveness
Do not stack z-index values arbitrarily; establish a z-index scale in custom properties and document each layer's purpose
Do not rely on vendor prefixes without checking current browser support; tools like autoprefixer handle this systematically
Do not nest selectors excessively in preprocessors, as the generated CSS becomes highly specific and difficult to maintain or override

Frequently asked questions

What does the Css Expert AI skill do?

CSS expert for flexbox, grid, animations, responsive design, and modern layout techniques

Why use Css Expert on TypingMind?

Because you install it once and use it with any model. Css Expert is plain Markdown rather than provider-specific code, so the same skill runs on GPT-5, Claude, Gemini, Grok, or a local model — and you can switch model mid-chat without it breaking. TypingMind runs on your own API keys, so you pay providers directly instead of a per-seat subscription, and your skills and chats stay in your own storage.

How do I install Css Expert in TypingMind?

Open Plugins → Skills → Install from GitHub in TypingMind and paste https://github.com/RightNow-AI/openfang/tree/main/crates/openfang-skills/bundled/css-expert. TypingMind reads its SKILL.md and installs it as a skill you can enable per chat.

Which AI models can use Css Expert?

Any model you connect in TypingMind. AI skills are plain Markdown instructions rather than provider-specific code, so GPT, Claude, Gemini, Grok, and local models can all load this skill when a request matches it.

How many AI models can I use with Css Expert?

As many as you like. As long as a model supports skills, you can use Css Expert with it — GPT, Claude, Gemini, Grok, DeepSeek, Mistral, Llama and more — all on TypingMind with your own API keys.

Is the Css Expert AI skill free?

Yes. It is published on GitHub by RightNow-AI under the Apache-2.0 license. You only pay your own AI provider for the tokens you use.

What are AI skills?

An AI skill is a reusable instruction bundle that teaches an AI model how to do one specific task. It follows the open Agent Skills format: a SKILL.md file with a name and description, plus any scripts, templates or reference files the model may need. The model reads the instructions only when your request matches the skill, so an installed skill costs nothing until it is used.

How are AI skills different from plugins or MCP servers?

A plugin or MCP server gives a model new tools to call — code that runs somewhere and returns a result. An AI skill gives the model knowledge and process instead: how to approach a task, which steps to follow, what good output looks like. Skills are plain Markdown, so they need no server, no API key and no runtime, and they work with any model.

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Overview

Installation

Install in TypingMind

Install in another agent

Use it in TypingMind

Works with any AI model

Skill instructions

CSS Expert

Key Principles

Techniques

Common Patterns

Pitfalls to Avoid

Frequently asked questions

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