body {
    font-family: sans-serif;
    text-align: center;
  }
  #gameContainer {
    margin-top: 50px;
    padding: 1em;
    background-color: rgba(255,255,255, 0.5);
    border-radius: 30px;
  }
  input[type="number"] {
    padding: 5px;
    font-size: 16px;
  }
  button {
    padding: 10px 20px;
    font-size: 16px;
    cursor: pointer;
  }

  button#btnNewGame {
    display: none;
  }