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Utility css

Skill Amey-Thakur/AI-SKILLS/skills/css-styling/utility-css

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Install
npx -y skills add Amey-Thakur/AI-SKILLS --skill utility-css

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  • 19 days oldThe repository was created 19 days ago. New is not bad, but a brand new repository carrying a familiar-sounding name is the shape a typosquat arrives in, and there has been no time for anyone else to find a problem with it.
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What its author says it does

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Use Tailwind-style utilities with discipline, extracting components at the right threshold and keeping class lists readable. Use when working in a utility-first codebase or deciding whether and how to adopt one.

SKILL.md

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Utility CSS

Utility-first trades selector naming for co-location: styles live in markup, constrained to a design-token scale. The failure mode is not the long class list; it is the same long list pasted eleven times.

Method

  1. Adopt for the constraint, not the brevity. The win is that p-4 text-sm comes from a fixed scale, so spacing and type stay consistent without review vigilance. Configure the theme first (tokens in, arbitrary values out); a codebase full of w-[437px] has utility syntax with none of the benefit.
  2. Extract on the third copy, into a component. Duplication is fine twice. The third time, extract a framework component (React/Vue) that owns the class list, not a CSS @apply class; @apply rebuilds the semantic-CSS layer you just left, and drifts from the utility source of truth.
  3. Order classes canonically. Layout, spacing, typography, color, states: flex items-center gap-2 px-4 text-sm text-muted hover:bg-surface-2. Use the official Prettier plugin so ordering is automated and diffs stay quiet.
  4. Push variants into data attributes at complexity. When a component has states, data-state="open" with data-[state=open]:rotate-180 reads better than ternary class soup in JS, and keeps the state machine visible in one attribute.
  5. Keep an escape hatch layer, small and listed. Genuinely complex selectors (typography over rendered markdown, third-party widget overrides) go in a real stylesheet under @layer components. If that file grows past a screen or two, utilities are being avoided rather than escaped.
  6. Review rendered output, not class strings. In PRs, the question is whether the element uses the scale and the semantic color tokens; inconsistency shows up as one-off arbitrary values and raw hex, which are lintable (no-arbitrary-value rules).

Boundaries

  • Do not mix naming conventions and utilities on the same element halfway; a codebase needs one primary styling idiom per layer.
  • Utility classes in string-concatenation logic defeat the compiler's content scanning; class names must appear whole in source.
  • For a design-system package consumed by many apps, tokens plus real CSS components travel better than exported utility markup.

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