gem 'normalize-rails'
require normalize-rails
add file
rename
テンプレートの調整
テンプレートの調整css
def create
app/views/boards/new.html.erb
app/controllers/boards_controller.rb
app/views/boards/edit.html.erb
app/views/boards/show.html.erb
app/assets/stylesheets/application.css.scss