#tempoWrapper {
  grid-column: 1 / span 3;
  grid-row: 3 / span 1;

  display: grid;
  grid-gap: 0;
  /* 3 columns. */
  grid-template-columns: 1fr 1fr 1fr;
  /* 2 rows. */
  grid-template-rows: 1.5rem minmax(min-content, max-content) minmax(min-content, max-content) minmax(min-content, max-content);

  /* Because the rhythmsWrapper that follows has top padding. */
  padding-bottom: 0;
}

#tempoHeading {
  grid-column: 1 / span 2;
  grid-row: 1 / span 1;

  margin-bottom: 0.5rem;
}

#tempoButtons {
  grid-column: 1 / span 3;
  grid-row: 2 / span 1;

  margin-bottom: 0.5rem;

  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(8rem, 1fr));
}

.tempoButton {
  /* margin: calc(0rem + 0.5vw); */
  margin: 0.2rem;
}

div#tempoText {
  grid-column: 3 / span 1;
  grid-row: 1 / span 1;
  margin-left: auto;
}

#tempoSlider {
  grid-column: 1 / span 3;
  grid-row: 3 / span 1;

  width: 100%;
  height: 2rem;
  min-height: 2rem;
  max-height: 2rem;
  padding: 0;

  display: flex;
  flex-direction: row;
}

#tempoRange {
  width: 100%;
}

.bpmHackW {
  user-select: none;
  margin-left: 0.5rem;

  display: grid;
  grid-template-rows: 1fr;
  grid-template-columns: 1fr;
}

#bpmNum, .bpmHack, .volumeIconWrapper {
  grid-row: 1 / 1;
  grid-column: 1 / 1;

  text-align: right;
}

#compoundBpmW {
  grid-column: 1 / span 3;
  grid-row: 4 / span 1;

  font-size: 0.9rem;
  width: 100%;
  display: flex;
  justify-content: flex-end;

  visibility: hidden;
}

#compoundBpm {
  margin-left: 0.5rem;
  margin-right: 0;
}

#tempoWrapper.compound > #compoundBpmW {
  visibility: visible;
}

#tempoSlider.retracted {
  display: none;
}