"devDependencies": {
    "compile:sass": "node-sass sass/main.scss css/style.comp.css",
    "concat:css": "concat -o css/style.concat.css css/icon-font.css css/style.comp.css",
    "prefix:css": "postcss --use autoprefixer -b 'last 10 versions' css/style.concat.css -o css/style.prefix.css",
    "compress:css": "node-sass css/style.prefix.css css/style.css --output-style compressed",
    "build:css": "npm-run-all compile:sass concat:css prefix:css compress:css"
}

 "devDependencies":
 {
    "autoprefixer": "^7.1.4",
    "concat": "^1.0.3",
    "node-sass": "^4.5.3",
    "npm-run-all": "^4.1.1",
    "postcss-cli": "^4.1.1"
}