.btn {
  padding: 0.6rem;
  width: 80%;
  border-radius: 10px;
  color: #ffffff;
  font-size: 1rem;
  border-style: none;
  text-decoration: none;
  margin-top: 1rem;
  cursor: pointer;
  font-family: 'Oswald', sans-serif;
}
.btn:focus {
  outline: none;
}
.btn-primary {
  background-color: #431418;
}
.btn-disable {
  background-color: #B1B1B1;
}
.btn-correcto {
  background-color: #21BF73;
  margin: 1rem auto auto
}
.btn-incorrecto {
  background-color: #D92027;
  margin: 1rem auto auto
}
.comprobado {
  display: none;
}
#true {
  display: none;
}
#false {
  display: none;
}