base 32rem (512px) @media (width >= 32rem) sm 40rem (640px) @media (width >= 40rem) md 48rem (768px) @media (width >= 48rem) lg 64rem (1024px) @media (width >= 64rem) xl 80rem (1280px) @media (width >= 80rem) 2xl 96rem (1536px) @media (width >= 96rem)