Answer:
aligning items in columns and rows, allowing developers to easily control the rendering and appearance of large layouts and whole pages meant for the desktop, tablet, and smartphone displays.
Explanation:
At a depth of 930 miles (1,500 km), this rock is some 300 times stiffer than at the boundary between the upper and lower mantle, which is about 410 miles (660 km) deep.
I believe the answer is a book... It's thin and long, wide on the sides, easily ripped, etc