_perfect-scrollbar.scss

$ps-size: 0.25rem;
$ps-hover-size: 0.375rem;
$ps-track-size: 0.5rem;

.ps__thumb-y {
  inline-size: $ps-size !important;
  inset-inline-end: 0.0625rem;
}

.ps__thumb-y,
.ps__thumb-x {
  background-color: rgb(var(--v-theme-perfect-scrollbar-thumb)) !important;
}

.ps__thumb-x {
  block-size: $ps-size !important;
}

.ps__rail-x {
  background: transparent !important;
  block-size: $ps-track-size;
}

.ps__rail-y {
  background: transparent !important;
  inline-size: $ps-track-size !important;
  inset-inline-end: 0.125rem !important;
  inset-inline-start: unset !important;
}

.ps__rail-y.ps--clicking .ps__thumb-y,
.ps__rail-y:focus > .ps__thumb-y,
.ps__rail-y:hover > .ps__thumb-y {
  inline-size: $ps-hover-size !important;
}