A free (libre), open-source (MIT license) HTML5 template built for responsive design. Skeleton's 12-column grid uses CSS media queries to automatically adjust page layout for the size of a viewer's screen or browser window.
Michael Johnston. Proceedings of the 11th International Conference on Multimodal Interfaces and the 6th Workshop on Machine Learning for Multimodal Interfaces ICMI-MLMI '09, Cambridge, MA, USA, page 47-54. (2009)