Ingrid CSS3 Layout Framework
Ingrid is a fluid and lightweight CSS layout system.
Ingrid’s main task is, as the developer puts it, “to reduce the use of classes on individual units.”
That’s not everything that Ingrid does, though, as the library also provides some features for responsive designs.
It’s rather easy to implement, and, with its hierarchical approach to CSS thinking, makes for an easy-to-use CSS mini framework.