body {
  background-color: #000000;
  font-family: "Book Antiqua", serif;
  font-size: medium;
}

a {
  color: #191970;
}

img {
  display: block; 
  margin-left: auto; 
  margin-right: auto; 
  margin-top: 40px;
}

a:hover {
  color: Blue;
}