code-lab/node_modules/vuetify/lib/labs/VStepperVertical/VStepperVerticalItem.css

.v-stepper-vertical-item {
  position: relative;
  transition-duration: 0.2s;
  transition-property: opacity;
  transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
}
.v-stepper-vertical-item__title {
  font-size: 1rem;
}
.v-stepper-vertical-item__subtitle {
  font-size: 0.75rem;
}
.v-stepper-vertical-item .v-expansion-panel-text {
  padding-inline-start: 32px;
}
.v-stepper-vertical-item:not(:last-child):before {
  content: "";
  position: absolute;
  width: 2px;
  height: calc(100% - 30px);
  background: rgba(var(--v-border-color), var(--v-border-opacity));
  left: 35px;
  top: 44px;
  z-index: 1;
  transition-duration: 300ms;
  transition-property: height;
}
.v-stepper-vertical-item:after {
  display: none;
}
.v-stepper-vertical-item.v-expansion-panel--disabled .v-expansion-panel-title, .v-stepper-vertical-item:not(.v-stepper-vertical-item--editable) .v-expansion-panel-title {
  pointer-events: none;
}
.v-stepper-vertical-item.v-expansion-panel--disabled .v-expansion-panel-title .v-expansion-panel-title__overlay, .v-stepper-vertical-item:not(.v-stepper-vertical-item--editable) .v-expansion-panel-title .v-expansion-panel-title__overlay {
  opacity: 0;
}

.v-stepper-vertical-item__avatar.v-avatar {
  background: rgba(var(--v-theme-surface-variant), var(--v-medium-emphasis-opacity));
  color: rgb(var(--v-theme-on-surface-variant));
  transition-property: background;
}
.v-stepper-vertical-item__avatar.v-avatar .v-icon {
  font-size: 0.875rem;
}
.v-expansion-panel--active .v-stepper-vertical-item__avatar.v-avatar {
  background: rgb(var(--v-theme-surface-variant));
}
.v-stepper-vertical-item--error .v-stepper-vertical-item__avatar.v-avatar {
  background: rgb(var(--v-theme-error));
  color: rgb(var(--v-theme-on-error));
}

.v-stepper-vertical-item--error .v-stepper-vertical-item__title {
  color: rgb(var(--v-theme-error));
}

.v-stepper-vertical-item--error .v-stepper-vertical-item__subtitle {
  color: rgb(var(--v-theme-error));
}

.v-stepper-vertical-actions.v-stepper-actions .v-btn {
  margin-inline-end: 8px;
}
.v-stepper .v-stepper-vertical-actions.v-stepper-actions {
  justify-content: flex-end;
  padding: 24px 0 0;
  flex-direction: row-reverse;
}