Responsive Design Cheatsheet
Responsive Web Design was first described by Ethan Marcotte. Since that time there has been a responsive Web design revolution of sorts, but you may find evolution of responsive design to be more relevant. Responsive design has greatly impacted the Web design and development industry, and has created a fundamental shift in how websites are being built. As of late, the adoption rate of responsive web design is growing rapidly. Here is a responsive design cheat sheet that you may find a useful reference for responsive grids, responsive images, responsive text and other data such as viewport widths, and typical devices sizes.