@keyframes scroll{
  0% {
    transform: translate3d(0,0,0);
  }
  100% {
    transform: translate3d(26px,0,0);
  }
}

.scrollStep {
  animation: scroll 300ms infinite linear;
}

.roundedLeft {
  border-radius: 4px 0 0 4px
}

.roundedRight {
  border-radius: 0 4px 4px 0
}