.parent {
  display: grid;
  place-items: center;
}

.control {
  display: grid;
  padding-top: 10%;
  grid-template-rows: 1fr 1fr;
  grid-template-rows: 1fr 1fr;
}

.weight {
  grid-row: 1 / 3;
}

.weight input[type=number] {
  width: 300px;
  border: none;
  font-size: 96pt;
  font-weight: bold;
  -moz-appearance: textfield;
}

.button {
  border: none;
  font-size: xxx-large;
  font-weight: bold;
  width: 2em;
  height: 2em;
  color: black;
}

.increase {
  grid-row: 1;
  grid-column: 2;
}

.decreates {
  grid-row: 2;
  grid-column: 2;
}

#plot {
  width: 100%;
  height: 600px;
}