.class {
  opacity: 0;
  opacity: 0%;
  opacity: 0.45;
  opacity: 45%;
  opacity: 0.0045;
  opacity: 0.45%;
  opacity: 0.00045;
  opacity: 0.045%;
  opacity: 0;
  opacity: 0.00000000000045%;
  opacity: 0.0033;
  opacity: 0.33%;
  opacity: 0.00333;
  opacity: 0.3333333333%;
  opacity: 0.99;
  opacity: 99%;
  opacity: 1;
  opacity: 100%;
  opacity: 1.2;
  opacity: 120%;
  opacity: 0.01;
  opacity: 0.9999999999%;
}
.bar {
  opacity: 0.3;
  opacity: initial;
}