.synth-head {
  text-align: center;
}

.synth-wrapper {
  max-width: 960px; 
  margin: 0 auto;
}

.keyboard {
  margin-top: 30px;
}

.keyboard-head {
  text-align: center;
}

.keyboard-top-row {
  padding-left: 50px;
}

.keyboard-sub {
  font-size: 0.7rem;
  vertical-align: top;
}