CSS frameworks are all the rage these days. Between Zurb's Foundation new v.6, Bootstrap upcoming v.4 and now this, there's a lot to choose from. Solid does look fairly similar to the other two though. It would be interesting to hear the developers' thoughts.

Hi! It is similar, though obviously has a lot less functionality than, say, Bootstrap. We built it so we could control what we need/when we need it, to keep things as small and lean as possible! Thanks for posting this on Product Hunt!