I found the framework Materialize, but unfortunately it lacks gem support like Twitter Bootstrap has.
So I downloaded their Sass source and tried to integrate it into a Rails asset pipeline, albeit with errors:
Undefined variable: "$button-height".
(in /app/assets/stylesheets/components/_buttons.scss:4)
Should I put it into the /lib folder instead?
How to install this framework with Rails 4.2?
You can use bower
or use this gem https://github.com/mkhairi/materialize-sass
I've had some issues with materialize fonts using bower, I suggest use the gem.