@include min($bp, $max: "null", $device: "screen"){}

Parameters:

• $bp - Breakpoints are defines in the map variables $breakpoints, breakpoints can be called with the function bp(). As we call a function inside a mixin we will need to use sass interpolation, #{bp()}. This will return a value in em.
• $max - Optional max value, using $breakpoints map
• $device - Default screen

Usage:

• h2{@include min(#{bp(sm)}){font-size: font-size(2);}}

Output:

• @media only screen and (min-width: 36em) {h2{font-size: 2.5rem;}