body {
  font-family: "Titillium Web", serif;
    text-align: center;
    margin: 20px;
  }
  
  h1 {
    color: #333;
  }
  
  form {
    margin-top: 20px;
  }
  
  .question {
    margin-bottom: 20px;
  }
  
  .options button {
    margin: 3px;
    padding: 10px 15px;
    background-color: #000000;
    color: #fff;
    cursor: pointer;
    border-radius: 0.03px;
  }
  
  .options button:hover {
    background-color: #7b828a;
  }
  
  .options button.selected {
    background-color: #ffffff;
    color: #000000;
  }
  
  .hidden {
    display: none;
  }
  
  img {
    max-width: 100%;
    height: auto;
  }
  
  #enviar {
    margin: 3px;
    padding: 10px 15px;
    background-color: #ffffff;
    color: #000000;
    cursor: pointer;
    border-radius: 0.03px;

  }

  .footer-left {
    position: fixed;
    bottom: 20px;
    left: 20px;
  }
  
  .footer-left .btn {
    background-color: black;
    color: white;
    border: none;
    padding: 10px 15px;
    margin-bottom: 10px;
    font-size: 14px;
    cursor: pointer;
    transition: background-color 0.3s ease;
  }
  
  .footer-left .btn:hover {
    background-color: white;
    color: black;
    border: 1px solid black;
  }