body {
    margin: 0;
    font-family: Arial, sans-serif;
    background: #0f0f0f;
    color: #ffffff;
    padding: 20px;
  }
  
  header {
    text-align: center;
    margin-bottom: 40px;
  }
  
  header h1 {
    font-size: 2.5em;
  }
  
  header p {
    color: #ccc;
  }
  
  
  
  nav {
    margin-top: 10px;
  }
  
  nav a {
    color: #66d9ef;
    margin: 0 10px;
    text-decoration: none;
    transition: ease 0.3s;
  
  }
  
  
  nav a:hover {
    color: #fff;
    transition: ease 0.3s;
  }
  
  
  section {
    max-width: 800px;
    margin: 0 auto 40px;
  }
  
  h2 {
    border-bottom: 2px solid #333;
    padding-bottom: 5px;
  }
  
  footer {
    text-align: center;
    margin-top: 60px;
    color: #777;
  }
  
  .game-container {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
  }
  .game-row {
    display: flex;
    justify-content: center;
    margin-bottom: 10px;
  }

  .game-cell{
    width: 50px;
    height: 50px;
    border: 2px solid #333; //
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 24px;
    color: #fff;
    background-color: #1a1a1a;
    margin-right: 5px;
    text-align: center;
    outline: none; /* Remove default browser outline */
  }

.game-cell:focus {
    border-color: #66d9ef; /* Blue border when focused */
    transition: border-color 0.2s ease; /* Smooth transition */
}

.game-cell:focus {
    border-color: #66d9ef; /* Blue border when focused */
    transition: border-color 0.2s ease; /* Smooth transition */
}

.game-cell[readonly] {
    pointer-events: none; /* Prevent focus on readonly cells */
}

.game-controls {
    display: flex;
    justify-content: center;
    margin-top: 20px;
}

.game-button {
    background-color: #66d9ef;
    color: #373131;
    border: none;
    padding: 10px 20px;
    font-size: 16px;
    cursor: pointer;
    margin: 0 5px;
    border-radius: 5px;
    font-weight: bold;
    transition: background-color 0.3s ease;
}