body {
      font-family: Arial, sans-serif;
      text-align: center;
      padding: 50px;
      background: #f0f8ff;
    }

    h1 {
      font-size: 2.5em;
      color: #333;
    }

    input[type="number"] {
      padding: 10px;
      font-size: 1.2em;
      width: 80px;
    }

    button {
      padding: 10px 20px;
      font-size: 1.1em;
      cursor: pointer;
      margin-left: 10px;
    }

    #result {
      margin-top: 20px;
      font-size: 1.5em;
    }

    #attempts {
      margin-top: 10px;
      font-size: 1.1em;
      color: #555;
    }