Styler, a tool to compose css classes with ruby

One of the things that I want from css is to have to possibility to compose already defined styles, to define new ones…If you try to write “Semantic CSS”, you will find a hard time trying to avoid the repetition on things that look the same but are different things, like when you want to render a “card” for the an author and then for an article.You can create “content agnostic CSS components”, but things start to get complicated, when you want to avoid duplication if things from one component are similar to other components.