body, html {
  height: 100%;
  background-color: #6F6960;
}

#lifeGame {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100%;
  text-align: center;
  color: white;
  font-family: 'Bungee', cursive;
}

#generation {
  margin: 10px 0px;
}

.btn {
  margin: 10px 1px;
}