select2/docs/themes/learn2/scss/nucleus/mixins/_breakpoints.scss

// Breakpoints
@mixin breakpoint($breakpoint, $media: all) {
	@if $breakpoint == large-desktop-range {
		@media only #{$media} and (min-width: $large-desktop-container) { @content; }
	}
	@else if $breakpoint == desktop-range {
		@media only #{$media} and (min-width: $desktop-container) and (max-width: $large-desktop-container - 0.062) { @content; }
	}
	@else if $breakpoint == tablet-range {
		@media only #{$media} and (min-width: $tablet-container) and (max-width: $desktop-container - 0.062) { @content; }
	}
	@else if $breakpoint == large-mobile-range {
		@media only #{$media} and (min-width: $large-mobile-container + 0.063) and (max-width: $tablet-container - 0.062) { @content; }
	}
	@else if $breakpoint == small-mobile-range {
		@media only #{$media} and (max-width: $large-mobile-container) { @content; }
	}
	@else if $breakpoint == no-mobile {
		@media only #{$media} and (min-width: $tablet-container) { @content; }
	}
	@else if $breakpoint == mobile-only {
		@media only #{$media} and (max-width: $tablet-container - 0.062) { @content; }
	}
	@else if $breakpoint == desktop-only {
		@media only #{$media} and (max-width: $desktop-container - 0.062) { @content; }
	}
}