body {
    font-family: Arial, sans-serif;
    background: #f0f8ff;
    text-align: center;
    padding: 20px;
  }
  h1 {
    color: #333;
  }
  .guess-line {
    margin: 10px 0;
    font-size: 1.5em;
  }
  .guess {
    display: inline-block;
    width: 150px;
  }
  .feedback {
    display: inline-block;
  }
  .dot {
    font-size: 1.5em;
    margin: 0 5px;
  }
  .green { color: green; }
  .blue { color: blue; }
  .red { color: red; }
  button {
    padding: 10px 20px;
    font-size: 1em;
    margin-top: 20px;
    cursor: pointer;
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 5px;
  }