.btn-xs {
	@include button-size(0.5rem, 0.75rem, $font-size-xs, $input-btn-line-height-sm, $border-radius-sm);
	letter-spacing: $btn-letter-spacing;
}

.btn-sm {
	@include button-size($input-btn-padding-y, $input-btn-padding-x, $small-font-size, $input-btn-line-height, $border-radius);
}