.numbers__window {
  display: inline-block;
  overflow: hidden;
  width: 0.5em;
  height: 1em;
}
.numbers__window__digit {
  font: inherit;
  word-break: break-all;
  display: block;
  width: 0;
  padding: 0 0.52em 0 0;
  margin: 0 auto;
  overflow: inherit;
  animation: counting 0.4s steps(10) forwards infinite;
}
.numbers__window__digit::before {
  content: attr(data-fake);
  display: inline-block;
  width: 100%;
  height: auto;
}
.numbers__window__digit--1 {
  animation-iteration-count: 3;
}
.numbers__window__digit--2 {
  animation-iteration-count: 6;
}
.numbers__window__digit--3 {
  animation-iteration-count: 9;
}
.numbers__window__digit--4 {
  animation-iteration-count: 12;
}
.numbers__window__digit--5 {
  animation-iteration-count: 15;
}

@keyframes counting {
  100% {
    transform: translate3d(0, -10em, 0);
  }
}