postcss.config.js

module.exports = {
  plugins: {
    "postcss-cssnext": {
      browsers: [
        "Firefox >= 58",
        "Chrome >= 62",
        "ie >= 10",
        "last 4 versions",
        "Safari >= 9"
      ]
    },
    "postcss-import": {},
    "postcss-pxtorem": {
      rootValue: 16,
      unitPrecision: 5,
      propList: ["*"],
      selectorBlackList: ["html", "body"],
      replace: true,
      mediaQuery: false,
      minPixelValue: 0
    },
    "postcss-nested": {}
  }
};