$ npm install --global vue-cli

$ vue init webpack my-project

$ cd my-project
$ npm install

npm install --save-dev sass-loader
//sass-loader依赖于node-sass
npm install --save-dev node-sass

<style lang="sass">

npm run dev

 ERROR Failed to compile with 1 errors

 error in ./src/components/Hello.vue

Module build failed: 
h1, h2 {
    ^
   Invalid CSS after "h1, h2 {": expected "}", was "{"
   in /Users/fangyongle/my-blogger/src/components/Hello.vue (line 36, column 9)

@import "./common/scss/mixin";

Module build failed: 
 #app {
^
 Media query expression must begin with '('
 in /Users/fangyongle/elema/src/App.vue (line 35, column 1)
@ ./~/vue-style-loader!./~/css-loader!./~/vue-loader/lib/style-rewriter.js?id=data-v-0bf489db!./~/sass-loader!./~/vue-loader/lib/selector.js?type=styles&index=0!./src/App.vue 4:14-248 13:3-17:5 14:22-256