#game-of-life-container .row {
  display: block;
  font-size: 0;
  background-color: #000;
  width: 600px;
  margin: auto;
}

#game-of-life-container .box {
  width: 4px;
  height: 4px;
  display: inline-block;
}

#game-of-life-controls {
  display: flex;
  align-items: center;
  justify-content: center;
}

#game-of-life-controls button {
  display: inline-block;
}

#game-of-life-controls button:hover {
  background: #1e90ff20;
}