$icon-sizes: (
  "sm":    12px,
  "m":     14px,
  "base":  16px,
  "lg":    20px,
  "xl":    24px
);

.o-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 16px;
  height: 16px;

  &.-sm {
    width: 12px;
    height: 12px;
    font-size: 10px;
  }

  &.-m {
    width: 14px;
    height: 14px;
    font-size: 12px;
  }

  &.-lg {
    width: 24px;
    height: 24px;
    font-size: 20px;
  }

  &.-xl {
    width: 28px;
    height: 28px;
    font-size: 24px;
  }

  &.-spaced {
    & + * {
      margin-left: $space-1;
    }
  }
}