body, html {
    margin: 0;
    padding: 0;
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background-color: #f0f0f0;
  }
  
  #gameContainer {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
  }
  
  #gameCanvas {
    border: 2px solid #000;
    background-color: #fff;
  }
  
  #timer {
    margin-top: 10px;
    font-size: 20px;
    font-weight: bold;
  }