Grid based on the flex display property.
npm i flexboxgrid --save
bower install flexboxgrid
<link rel="stylesheet" href="proxy.php?url=https%3A%2F%2Fcdn.jsdelivr.net%2Fflexboxgrid%2F6.3.0%2Fflexboxgrid.min.css" type="text/css" >
Add the flexboxgrid.css development or flexboxgrid.min.css production to your html page.
<link rel="stylesheet" href="proxy.php?url=https%3A%2F%2Fgithub.com%2Fcss%2Fflexboxgrid.min.css" type="text/css">