My older gem magic_stylez more generic, smaller and with use of bootstrap 4.0!
See online docu here.
Add this lines to your application's Gemfile:
source 'https://rails-assets.org' do
gem 'rails-assets-tether', '>= 1.3.3'
end
gem 'better_styles'
And then execute:
$ bundle
Or install it yourself as:
$ gem install better_styles
Contribution directions go here.
The gem is available as open source under the terms of the MIT License.