body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    background-color: #f4f4f9;
    color: #333;
  }

  h1 {
    font-size: 1.8rem;
    margin-bottom: 20px;
    color: #0056b3;
  }

  .container {
    display: flex;
    flex-direction: column;
    width: 100%;
    max-width: 600px;
    gap: 10px;
  }

  textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 5px;
    font-size: 16px;
    resize: none;
    box-sizing: border-box;
    white-space: pre-wrap;
    overflow-wrap: break-word;
  }

  textarea:focus {
    outline: 2px solid #0078d4;
  }

  .output-container textarea {
    background-color: #f9f9f9;
    border: 1px solid #ddd;
    color: #333;
  }

  .highlight {
    background-color: #ffeb3b;
    color: #000;
    font-weight: bold;
  }

  button {
    padding: 12px 20px;
    font-size: 16px;
    font-weight: bold;
    color: white;
    background-color: #0078d4;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    text-align: center;
  }

  button:hover {
    background-color: #005bb5;
  }

  button:active {
    background-color: #004494;
  }

  @media (max-width: 768px) {
    h1 {
      font-size: 1.5rem;
    }

    button {
      font-size: 14px;
      padding: 10px 15px;
    }
  }