@builder.io/qwik/dist/starters/features/postcss/postcss.config.js

An Open-Source sub-framework designed with a focus on server-side-rendering, lazy-loading, and styling/animation.

module.exports = {
  plugins: {
    autoprefixer: {},
    "postcss-preset-env": {
      stage: 3,
      features: {
        "nesting-rules": true,
      },
    },
  },
};