body {
    font-family: Arial, sans-serif;
    background: #f5f5f5;
    color: #333;
    text-align: center;
    padding: 2rem;
  }
  
  .container {
    max-width: 600px;
    margin: auto;
  }
  
  input {
    padding: 0.5rem;
    width: 70%;
    margin-right: 10px;
  }
  
  button {
    padding: 0.5rem 1rem;
    background-color: #444;
    color: white;
    border: none;
    cursor: pointer;
  }
  
  #result {
    margin-top: 2rem;
    text-align: left;
  }