Grid Layout
This a flex grid aimed to take advantage of solving common web-design problems with Flex. To understand more about the grid structure, please refer to this post: http://philipwalton.github.io/solved-by-flexbox/demos/grids/
And this repository: https://github.com/philipwalton/solved-by-flexbox
Reference : https://developer.mozilla.org/en/docs/Web/CSS/flex