Individual skill
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.
plugins/LVTD-LLC/skills/skills/css-math-units/SKILL.md
Source commit d780783eba4ecc7c8b9429f95c9362df95f07c61
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- Last checked
- Nov 4, 2026
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- 1,537
- Repository last updated
- Nov 7, 2026
- License
- Apache-2.0
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- frontend,css,units,layout,math Declared skill tag
- engineering Derived category
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SKILL.mdcore · 1,985 bytesSKILL.mdcore · 1,985 bytesagents/openai.yamlasset · 199 bytesguidelines.mddoc · 2,881 bytesreferences/css-calculations/checklist.mddoc · 1,286 bytesreferences/css-calculations/examples.mddoc · 1,246 bytesreferences/css-calculations/knowledge.mddoc · 2,759 bytesreferences/css-calculations/patterns.mddoc · 1,399 bytesreferences/css-calculations/rules.mddoc · 2,327 bytesreferences/source-map.mddoc · 737 bytesworkflows/debug-css-calculation.mddoc · 2,406 bytes
Read excerpt
# 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 |