Concise is a lightweight, front-end framework that provides a number of great features without the bloat. Concise is built based on Object-Oriented CSS principles and keeps semantics in mind to provide a small learning curve, but a high level of customization.
It comes built from the ground up to be mobile friendly and includes a simple grid system, beautiful typography, and a few other bells and whistles. However, it is also built super lean, with a little more than 2,500 thousand lines of CSS, and a few hundred lines of JavaScript. Concise is specifically built to be customized, tinkered with, and hacked.