Cards
Cards can be used for repeating elements that need to stack on smaller screen sizes. By combining both the flexbox grid and cards, you can create structure to place things like blog entries, customer reviews, or prominent features of your product or service.
Cards are closely related to panels, but differ in style and presentation. Pick the right component for the type of content you want to use.
See the Pen Card Styles by Kyle Logue (@kylelogue) on CodePen.0