surge --domain teachus.surge.sh
$ npm i
$ gulp
http://localhost:9000
app.scss - include all styles
style/system - base styles, mixins, options & resets
style/core - grids & core page styles
style/blocks - isolated entitys
style/pages - styles for specific site page
style/components - impartible elements
main.js - include all js files
init.js - initialization plugins
common.js - helper functions