pad-demo/.postcssrc.js

// https://github.com/michael-ciniawsky/postcss-load-config

module.exports = {
  plugins: {
    'autoprefixer': {
      browsers: ['Android >= 4.0', 'iOS >= 7']
    },
    'postcss-pxtorem': {
      rootValue: 50,
      propList: ['*']
    }
  }
}