body {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    background-color: #222;
    color: #929191;
    font-family: Arial, sans-serif;
  }
  
  .container {
    text-align: center;
  }
  
  .board {
    display: grid;
    grid-template-columns: repeat(3, 100px);
    grid-gap: 5px;
    background-color: #444;
    padding: 5px;
    border-radius: 5px;
    margin-bottom: 20px;
  }
  
  .cell {
    width: 100px;
    height: 100px;
    background-color: #eee;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 36px;
    cursor: pointer;
  }
  
  .cell:hover {
    background-color: #ddd;
  }
  
  #restartBtn {
    padding: 10px 20px;
    font-size: 16px;
    border: none;
    background-color: #4caf50;
    color: #fff;
    cursor: pointer;
    border-radius: 5px;
  }
  

  .line {
    position: absolute;
    height: 3px;
    background-color: #ffffff;
    transform-origin: left center;
}