FlexibleGrid works very similarly to the standard float grid, but includes a number of different features only possible with flex, like horizontal and vertical alignment, auto sizing, and easier source ordering.

All example : http://flexible-grid.com

Flex Container

Apply display utilities to create a flexgrid container and transform direct children elements into flex items. Flex containers and items are able to be modified further with additional flex properties.

Display: flex

flex container

display:flex