.postcssrc.js

module.exports = {
  "plugins": {
    "postcss-import": {},
    "postcss-url": {},
    "postcss-aspect-ratio-mini": {},
    "postcss-cssnext": {},
    "postcss-px-to-viewport": {
      viewportWidth: 750, //(Number) The width of the viewport
      viewportHeight: 1334, //Number) The height of the viewport
      unitPrecision: 3, //(Number) The decimal numbers to allow the REM units to grow to.
      viewportUnit: 'vw', //(String) Expected units.
      selectorBlackList: ['.ignore', '.hairlines', '.weui', '.vux'], //(Array) The selectors to ignore and leave as px.
      minPixelValue: 1, //(Number) Set the minimum pixel value to replace.
      mediaQuery: false //(Boolean) Allow px to be converted in media queries.
    },
    "postcss-viewport-units": {},
    "cssnano": {
      preset: "advanced",
      autoprefixer: false,
      "postcss-zindex": false
    }
  }
}