// Optional directives @each $key in (0, 10, 20, 30, 40, 50, 60, 70, 80, 90, 100) {
.opacity-#{$key} { opacity: $key * .01; }
}
// Optional directives @each $key in (0, 10, 20, 30, 40, 50, 60, 70, 80, 90, 100) {
.opacity-#{$key} { opacity: $key * .01; }
}