.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": {browsers: ['last 3 versions', 'ie >= 8', 'Chrome >= 34', 'Firefox >= 30', 'safari >= 6', 'android >= 4.0', 'ios >= 7']}
  }
}