.btn:link, .btn:visited {
  background-color: #f44336;
  color: white;
  padding: 15px 25px;
  text-align: center;
  text-decoration: none;
  display: inline-block;
  width: 150px;
}

.btn:hover, .btn:active {
  background-color: red;
}

a:link, a:visited {
  color: gray;
  text-align: center;
  text-decoration: none;
}
a:hover, a:active {
  color: white;
}

body {
background-color:black;
background-image:url('./images/stars-background.jpg');
color:#c8c8c8;
font-family:Orbitron, sans-serif;
font-size:large;
}