The Magento Luma theme
The Magento CE 2.0 version comes with a new theme named Luma that implements Responsive Web Design (RWD) practices.
The Luma theme style is based on the Magento user interface (UI) library and uses CSS3 media queries to work with screen width, adapting the layout according to device access.
The Magento UI is a great toolbox for theme development in Magento 2.0 and provides the following components to customize and reuse user interface elements:
The actions toolbar
Breadcrumbs
Buttons
Drop-down menus
Forms
Icons
Layout
Loaders
Messages
Pagination
Popups
Ratings
Sections
Tabs and accordions
Tables
Tooltips
Typography
A list of theme variables
The Luma theme uses some of the
blank theme features to be functional. The Magento 2.0 blank theme, available in the vendor/magento/theme-frontend-blank folder, is the basic Magento theme and is declared as the parent theme of Luma. How is this possible? Logically, Magento has distinct folders for every theme, but Magento is too smart to reuse code...
