.sierra-et-backg {
  display: none;
}

.sierra-et-backg.sierra-et-display {
  display: block;
}


.sierra-et-backg-opacity {
  background: black;
  position: fixed;
  width: 100vw;
  height: 100vw;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 999999;
  opacity: .6;
}

.sierra-et-days,
.sierra-et-hours,
.sierra-et-minutes,
.sierra-et-seconds,
.sierra-et-labels {
  display: none;
}