body {
    font-family: Arial, sans-serif;
    margin: 20px;
  }
  
  h1 {
    text-align: center;
  }
  
  div {
    margin-bottom: 10px;
  }
  
  label {
    font-weight: bold;
  }
  
  input[type="text"] {
    width: 200px;
    padding: 5px;
  }
  
  button {
    padding: 5px 10px;
  }
  
  #resultado {
    border: 1px solid #ccc;
    padding: 10px;
    margin-top: 10px;
  }