body {
    font-family: monospace;
    background: #f2f2f2;
    padding: 20px;
    text-align: center;
  }
  
  textarea {
    width: 90%;
    height: 300px;
    font-size: 16px;
    padding: 10px;
    border-radius: 5px;
    resize: none;
  }
  
  button {
    margin-top: 10px;
    padding: 10px 20px;
    font-size: 18px;
    cursor: pointer;
  }
  
  pre {
    background: #222;
    color: #0f0;
    padding: 15px;
    text-align: left;
    max-width: 90%;
    margin: auto;
    border-radius: 5px;
    height: 200px;
    overflow-y: auto;
  }