body {
    font-family: Arial, sans-serif;
    padding: 20px;
  }
  h2 {
    margin-bottom: 20px;
  }
  .campo {
    margin-bottom: 15px;
  }
  .escondido {
    display: none;
  }
  label {
    display: block;
    margin-bottom: 5px;
  }
  input, select {
    padding: 5px;
    width: 200px;
  }
  button {
    padding: 10px 20px;
    margin-top: 20px;
    background: green;
    color: white;
    border: none;
    border-radius: 5px;
  }