body {
  background-image: url("../images/background.png");
  background-repeat: no-repeat;
  background-position: center center;
  background-attachment: fixed;
  background-size: cover;
}

.center {
  text-align: center;
}
h6 {
  color: white;
  text-shadow: 1px 1px 2px black, 0 0 25px blue, 0 0 5px darkblue;
}
h4 {
  color: rgb(52, 204, 191);
  text-shadow: 1px 1px 2px black, 0 0 25px rgb(255, 230, 0), 0 0 5px darkblue;
}