/* SOLO para la demo */
.sblock-demo {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background-color: #111;
  color: #f1f1f1;
  padding: 20px;
  border-radius: 10px;
}

.sblock-demo h2 {
  color: #00e0ff;
}

.sblock-demo button {
  background-color: #00e0ff;
  color: #000;
  padding: 10px 20px;
  border: none;
  font-weight: bold;
  cursor: pointer;
  margin-top: 10px;
}

.sblock-demo .respuesta {
  background-color: #222;
  padding: 10px;
  margin-top: 10px;
  border-left: 5px solid #00e0ff;
}