body {
    font-family: Arial, sans-serif;
    text-align: center;
    background-color: #f5f5f5;
    margin: 0;
    padding: 0;
  }
  
  h1 {
    margin-top: 20px;
  }
  
  #game-container {
    margin: 50px auto;
    width: 300px;
    padding: 20px;
    background: white;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  }
  
  #color-box {
    width: 150px;
    height: 150px;
    margin: 20px auto;
    border: 2px solid #ddd;
  }
  
  #hex-input {
    width: calc(100% - 20px);
    padding: 10px;
    margin-bottom: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
  }
  
  button {
    padding: 10px 20px;
    border: none;
    border-radius: 4px;
    color: white;
    cursor: pointer;
  }
  
  #guess-btn {
    background-color: #28a745;
  }
  
  #new-game-btn {
    background-color: #007bff;
  }
  
  #result-message {
    margin-top: 20px;
    font-size: 18px;
  }