Groundwork is a front-end framework especially made for Drupal. It was built to help you design beautiful websites faster and more efficient. As its name implies, it's a groundwork which comes already with sensible generic style defaults, CSS browser hacks, collection of mixins, bundles and more. Because of Groundwork's basic generic style, you may also wish to use its starter sub-theme as is, as a structured minimalistic theme or design your own.
Groundwork uses a 24 grid system as default. The layout options available are endless, which makes the Groundwork suite of themes extremely versatile. Customizing a website to specific layout and design is very easy.
Groundwork supports 17 regions whereas the regions page_top, page_bottom, and help are special hidden regions. The other 14 regions are available to you for unlimited block placement and layout options.