.commercial-month {
  position: relative;
  z-index: 1;
}

.commercial-month:hover,
.commercial-month:focus-within {
  z-index: 100;
}

.commercial-columns .commercial-value-bar:hover,
.commercial-columns .commercial-value-bar:focus {
  z-index: 101;
}

.commercial-value-bar span {
  z-index: 102;
  bottom: min(calc(100% + 8px), 170px);
}