Grid based on the flex display property.
npm i flexboxgrid --save
bower install flexboxgrid
<link rel="stylesheet" href="//cdn.jsdelivr.net/flexboxgrid/6.3.0/flexboxgrid.min.css" type="text/css" >
Add the flexboxgrid.css development or flexboxgrid.min.css production to your html page.
<link rel="stylesheet" href="css/flexboxgrid.min.css" type="text/css">