his-answer/.postcssrc.js

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

module.exports = {
  "plugins": {
    "postcss-import": {},
    "postcss-url": {},
    // to edit target browsers: use "browserslist" field in package.json
    "autoprefixer": {},
    // "postcss-px2rem": { "remUnit": 16 }    //配置rem基准值，75是iphone6标准
  }
}