body {
    font-family: monospace;
    /* text-align: center; */
    margin: 50px;
  }
  #pattern {
    font-size: 18px;
    margin-top: 100px;
    border: 1px solid black;
    padding: 100px;
    white-space: pre-line;
  }
  input {
    padding: 5px;
    width: 200px;
  }
  button {
    padding: 5px 10px;
    margin: 5px;
    cursor: pointer;
  }