// install the Angular CLI globally.
npm install -g @angular/cli

//cd project
cd www

//create new project
ng new angular-dev

Go to the project directory and launch the server.
cd angular-dev
ng serve --open or -o

//Converting a Current App to Sass
ng set defaults.styleExt scss

//look at angular-cli.json

//You'll find the new config line at the bottom of the file:
"defaults": {
  "styleExt": "scss",
  "component": {

//Add your scss structure
|- src/
     |- component/
     |- general/
     |- custom/
     |- style.scss

//The last step is to update our .angular-cli.json config to use this new src/scss/styles.scss instead of the src/styles.scss. In our .angular-cli.json file, just change the following line to point to the right styles.scss.

  "apps": [
      "root": "src",
      "outDir": "dist",
      "assets": [
      "index": "index.html",
      "main": "main.ts",
      "polyfills": "polyfills.ts",
      "test": "test.ts",
      "tsconfig": "",
      "testTsconfig": "tsconfig.spec.json",
      "prefix": "app",
      "styles": [
        //remove styles.css and add the following new path/file
      "scripts": [],
      "environmentSource": "environments/environment.ts",
      "environments": {
        "dev": "environments/environment.ts",
        "prod": "environments/"

//edit some classes and see it in action
ng serve -o