.btn {
  text-decoration: none;
  margin-top: 10px;
  margin-bottom: 10px;
  border-color: white;
  border-width: 1.5px;
  border-radius: 25px;
  background-color: transparent;
  font-size: large;
}

.jumbotron.jumbotron-fluid.text-center {
  color: white;
  background: rgba(52, 58, 64, 0.4);
  margin: auto;
}