hestiacp/web/postcss.config.js

module.exports = {
  plugins: [
    require('postcss-import'),
    require('postcss-size'),
    require('cssnano'),
    require('postcss-preset-env')({
      autoprefixer: {
        flexbox: 'no-2009',
      },
      stage: 1,
    })
  ]
}