.m-numbers {
  width: 5.5rem;
  margin-top: 0.25rem;
  text-align: center;
  overflow: hidden;
}

.u-number {
  height: 0.9rem;
  overflow: hidden;
}

.u-number i {
  width: 0.6rem;
  height: 0.9rem;
  display: inline-block;
  margin-right: 0.125rem;
  background: url("../img/numbers.png") no-repeat;
  background-position: 0 0;
  background-size: 100%;
  overflow: hidden;
}

.u-number i:first-child {
  display: none;
}

@keyframes serveSort {
  from {
    background-position: 0 0;
  }

  20% {
    background-position: 1rem 0.125rem;
  }

  40% {
    background-position: 1rem -0.125rem;
  }

  60% {
    background-position: -1rem -0.125rem;
  }

  80% {
    background-position: -1rem 0.125rem;
  }

  to {
    background-position: 0 0;
  }
}

.u-number i:first-child {
  display: none;
}