code-lab/node_modules/vuetify/lib/labs/VCalendar/VCalendarInterval.css

.v-calendar-day__row-with-label {
  display: grid;
  grid-template-columns: 48px 8px 1fr;
  border-right: thin solid #e0e0e0;
}
.v-calendar-day__row-with-label .v-calendar-day__row-hairline {
  position: relative;
  border-right: thin solid #e0e0e0;
}
.v-calendar-day__row-with-label .v-calendar-day__row-hairline:after {
  content: "";
  border-bottom: thin solid #e0e0e0;
  position: absolute;
  width: 100%;
  margin-top: -1px;
  z-index: 3;
  pointer-events: none;
}
.v-calendar-day__row-with-label .v-calendar-day__row-label {
  font-size: 10px;
  text-align: center;
  position: relative;
  top: -8px;
}
.v-calendar-day__row-with-label .v-calendar-day__row-content {
  border-bottom: thin solid #e0e0e0;
}
.v-calendar-day__row-with-label .v-calendar-day__row-content.v-calendar-day__row-content-through {
  border-bottom: none;
}

.v-calendar-day__row-without-label {
  display: grid;
  grid-template-columns: 1fr;
  border-right: thin solid #e0e0e0;
}
.v-calendar-day__row-without-label .v-calendar-day__row-content {
  overflow: hidden;
  border-bottom: thin solid #e0e0e0;
}
.v-calendar-day__row-without-label .v-calendar-day__row-content.v-calendar-day__row-content-through {
  border-bottom: none;
}