.roll {
  display: block;
}
.roll__mask {
  display: block;
  position: relative;
  overflow: hidden;

  height: var(--roll-h, 23px);
}
.roll--icon .roll__mask {
  width: 100%;
  height: 100%;
}
.roll__track {
  display: block;
  height: 100%;
  will-change: transform;
}
.roll__line {
  display: flex;
  align-items: center;
  height: 100%;
  white-space: nowrap;
}
.roll__line + .roll__line {
  position: absolute;
  top: 100%;
  left: 0;
  width: 100%;
}