body {
    font-family: sans-serif;
    padding: 10px;
    width: 250px;
  }
  
  h1 {
    font-size: 16px;
    margin-bottom: 10px;
  }
  
  button {
    padding: 5px 10px;
    background-color: #19647E;
    color: white;
    border: none;
    cursor: pointer;
  }
  
  #result {
    margin-top: 10px;
    font-weight: bold;
  }