.o-0 {
  opacity: 1; }

.o-1 {
  opacity: .9; }

.o-2 {
  opacity: .8; }

.o-3 {
  opacity: .7; }

.o-4 {
  opacity: .6; }

.o-5 {
  opacity: .5; }

.o-6 {
  opacity: .4; }

.o-7 {
  opacity: .3; }

.o-8 {
  opacity: .2; }

.o-9 {
  opacity: .1; }