How do I install the CSS Math Units skill?

Run npx skillmds@latest add hashgraph-online/css-math-units in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

Is CSS Math Units safe to use?

This skill has not completed SkillMD's automated safety review yet. Capability flags: makes network calls. SkillMD never runs a skill's scripts for you; review the SKILL.md before installing.

Which AI agents work with CSS Math Units?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is CSS Math Units free to use?

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

Who published CSS Math Units?

hashgraph-online (@hashgraph-online) published this skill. Their other Agent Skills are listed on their SkillMD profile.

CSS Math Units by hashgraph-online — Agent Skill

Name: CSS Math Units
Rating: 4.5 (4 reviews)
Author: hashgraph-online

CSS Math Units

Explain, derive, and debug CSS math for measurement units, calc(), min(), max(), clamp(), custom properties, inheritance, em/rem scaling, percentages, viewport units, and box model formulas. Use when CSS dimensions compute unexpectedly, when mixing units, when building scalable spacing/type systems, or when reviewing box sizing and inherited values.

hashgraph-online 05bc6af 10 files · 16.8 KB Updated Sep 9, 2026

File contents

CSS Math Units

Use this skill to trace how CSS values become computed layout values. It is useful for unit conversion, inherited size multiplication, calc expressions, custom property math, and box model sizing.

Quick Start

Read guidelines.md to select the smallest relevant file set.
Load references/css-calculations/rules.md for implementation decisions.
Load references/css-calculations/examples.md when editing code.
Use workflows/debug-css-calculation.md for multi-step derivation or debugging.

Resource	Purpose
`guidelines.md`	Routes tasks to the right reference files
`references/source-map.md`	Book source and chapter/section traceability
`references/css-calculations/knowledge.md`	Core concepts and terminology
`references/css-calculations/rules.md`	Practical rules, guidelines, and exceptions
`references/css-calculations/examples.md`	Bad/good examples and refactoring approach
`references/css-calculations/patterns.md`	Reusable formula and implementation patterns
`references/css-calculations/checklist.md`	Review checklist and red flags
`workflows/debug-css-calculation.md`	Step-by-step workflow

Source

Derived from Math for Web Design by Paul McFedries, Chapter 3: Math basics for CSS. Citations are tracked in references/source-map.md.

Source: hashgraph-online/awesome-codex-plugins → plugins/LVTD-LLC/skills/skills/css-math-units/SKILL.md

---name: css-math-unitsdescription: Explain, derive, and debug CSS math for measurement units, calc(), min(), max(), clamp(), custom properties, inheritance, em/rem scaling, percentages, viewport units, and box model formulas. Use when CSS dimensions compute unexpectedly, when mixing units, when building scalable spacing/type systems, or when reviewing box sizing and inherited values.--- # CSS Math Units Use this skill to trace how CSS values become computed layout values. It is useful for unit conversion, inherited size multiplication, calc expressions, custom property math, and box model sizing. ## Quick Start 1. Read `guidelines.md` to select the smallest relevant file set. 2. Load `references/css-calculations/rules.md` for implementation decisions. 3. Load `references/css-calculations/examples.md` when editing code. 4. Use `workflows/debug-css-calculation.md` for multi-step derivation or debugging. ## Contents | Resource | Purpose | |----------|---------| | `guidelines.md` | Routes tasks to the right reference files | | `references/source-map.md` | Book source and chapter/section traceability | | `references/css-calculations/knowledge.md` | Core concepts and terminology | | `references/css-calculations/rules.md` | Practical rules, guidelines, and exceptions | | `references/css-calculations/examples.md` | Bad/good examples and refactoring approach | | `references/css-calculations/patterns.md` | Reusable formula and implementation patterns | | `references/css-calculations/checklist.md` | Review checklist and red flags | | `workflows/debug-css-calculation.md` | Step-by-step workflow | ## Source Derived from *Math for Web Design* by Paul McFedries, Chapter 3: Math basics for CSS. Citations are tracked in `references/source-map.md`. --- **Source:** [`hashgraph-online/awesome-codex-plugins`](https://github.com/hashgraph-online/awesome-codex-plugins) → `plugins/LVTD-LLC/skills/skills/css-math-units/SKILL.md`

Frequently asked questions

CSS Math Units

File contents

CSS Math Units

Quick Start

Contents

Source

Related skills

Frequently asked questions

How do I install the CSS Math Units skill?

What does the CSS Math Units skill do?

Is CSS Math Units safe to use?

Which AI agents work with CSS Math Units?

Is CSS Math Units free to use?

Who published CSS Math Units?