Are there frameworks like Smartgrid?

Question

css

Question from a beginner in web programming.
I came across the video https://www.youtube.com/watch?v=KFVoIzaGPYg&t=412s. Interested. But, since I'm writing now in ruby, and this smartgrid, apparently, in node.js, it became interesting to see if there are similar projects for other web frameworks. I found a few, but there, as in Bootstrap, everything is tied to specifying the corresponding classes in the html, and I read somewhere that this practice has a bad effect on seo. So, are there similar css frameworks (and even better implemented through preprocessors like sass) implemented for RoR, Sinatra or Python's Django?

Answer 1

This is just a set of mixins, they can be used with the same bootstrap in the same way.

Answer 2

You can try Susy very similar.
Susy