code-lab/node_modules/vuetify/lib/components/VDatePicker/VDatePickerMonths.css

.v-date-picker-months {
  height: 288px;
}

.v-date-picker-months__content {
  align-items: center;
  display: grid;
  flex: 1 1;
  height: inherit;
  justify-content: space-around;
  grid-template-columns: repeat(2, 1fr);
  grid-gap: 0px 24px;
  padding-inline-start: 36px;
  padding-inline-end: 36px;
}
.v-date-picker-months__content .v-btn {
  text-transform: none;
  padding-inline-start: 8px;
  padding-inline-end: 8px;
}