coupon/postcss.conf...

module.exports = {
  plugins: {
    autoprefixer: {},
    'postcss-px-to-viewport': {
      viewportWidth: 414, // 375
      unitPrecision: 5,
      viewportUnit: 'vw',
      selectorBlackList: ['.ignore', '.hairlines'],
      minPixelValue: 1,
      mediaQuery: false,
      exclude: [
        /node_modules/,
        /pc/,
        /pcComp/,
      ]
    }
  }
}