Pancake Stack: To create the whole page layout, which is header, main and footer content.
Design reference
RAM (Repeat, Auto, Minmax): To create responsive grid. There are 2 different types of RAM applied.
Design reference
Sidebar Says: To create layout with sidebar.
Design reference
Respect for Aspect: Used on 3rd card image to control aspect ratio.
Design reference
12-Span Grid: To create unusual layout based on design.
Design reference