body {
  background-image: url('https://images.unsplash.com/photo-1472289065668-ce650ac443d2?ixid=MnwxMjA3fDB8MHxzZWFyY2h8NHx8b3RoZXJzfGVufDB8fDB8fA%3D%3D&ixlib=rb-1.2.1&w=1000&q=80');
  min-height: 100%;
  background-position: center;
  background-size: cover;
}
#Heading {
  font-family: Georgia, "Times New Roman", Times, serif;
  color: #000000;
}
ul {
  list-style-type: none;
  margin: 0;
  padding: 0;
  overflow: hidden;
  background-color: #333;
}

li {
  float: left;
}

li a {
  display: block;
  color: white;
  text-align: center;
  padding: 14px 16px;
  text-decoration: none;
}

li a:hover {
  background-color: #111;
}