.note-button {
  background-color: transparent; 
  height: 150px;
  width: 250px;
  margin: 20px;
}

.synth {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  padding-top: 25px;
}

button {
  font-family: "Courier Prime", monospace;
  border: 1px solid red;
}