Why is full-quote needed? We already have .excerpt which is for the quote. Could you use `.card-grid .excerpt`?

In general, I'm wary of this proliferation of `.gray-tags`, `.full-quote`, etc when the purpose is to modify an existing component as it appears in certain contexts. The context can be captured by descendent selectors. It makes the CSS a lot tidier.

If we need to, we should add classes or ids to the element which encapsulates each stream if we need to style their items differently.