postcss-preset-env

Convert modern CSS into something browsers understand

v10.1.1 URL: https://unpkg.com/postcss-preset-env@10.1.1/dist/index.cjs

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postcss-nesting

Nest rules inside each other in CSS

v13.0.1 URL: https://unpkg.com/postcss-nesting@13.0.1/dist/index.mjs

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@phun-ky/speccer

A script to annotate, show spacing specs and to display typography information in documentation/website on HTML elements

v11.2.2 URL: https://unpkg.com/@phun-ky/speccer@11.2.2/dist/speccer.js

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@csstools/postcss-nesting-experimental

Nest rules inside each other in CSS (Draft : 28 October 2022)

v3.0.1 URL: https://unpkg.com/@csstools/postcss-nesting-experimental@3.0.1/dist/index.cjs

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ecmarkup

Custom element definitions and core utilities for markup that specifies ECMAScript and related technologies.

v20.0.0 URL: https://unpkg.com/ecmarkup@20.0.0/lib/ecmarkup.js

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