.postcssrc.js

module.exports = {
    "plugins": {
      "postcss-import": {},
      "postcss-url": {},
      "postcss-aspect-ratio-mini": {},
      "postcss-write-svg": {
        "utf8": false
      },
      "postcss-cssnext": {},
      "postcss-px-to-viewport": {
        "viewportWidth": 750,
        "viewportHeight": 1334,
        "unitPrecision": 3,
        "viewportUnit": "vw",
        "selectorBlackList": [
          ".ignore",
          ".hairlines"
        ],
        "minPixelValue": 1,
        "mediaQuery": false
      },
      "postcss-viewport-units": {},
      "cssnano": {
        "preset": "advanced",
        "autoprefixer": false,
        "postcss-zindex": false
      },
      'postcss-sorting': {
        'order': [
          'custom-properties',
          'dollar-variables',
          'declarations',
          'at-rules',
          'rules'
        ],
        'properties-order': 'alphabetical',
        'unspecified-properties-position': 'bottom'
      }
    }
}