webtheme_admin-11.0.x-dev/postcss.config.js

module.exports = ctx => ({
    map: !ctx.env || ctx.env !== 'production' ? { inline: false } : false,
    plugins: [
      require('postcss-custom-properties')({
        preserve: false,
        // Breaks style lint and unnecessary if preserve set to false.
        // exportTo: 'dist-css/variables.css',
        importFrom: [
          'css/base/variables.css'
        ]
      }),
      require("postcss-calc"),
      require('autoprefixer')({
        cascade: false
      }),
    ]
  });