Material.io and the adaptive grid
To learn more about using a grid to design responsive layouts that adapt to any screen size and orientation, we recommend reading
Material.io Responsive Layout Grid. It has a great breakdown of what columns, gutters and margins are, how to design for consistency, and adaptive layouts.
Beeline Sketch Libraries
Our Beeline Sketch Libraries have a built in grid system that can be toggled on and off
Download the Beeline Sketch Libraries