body {
  margin: 0;
  padding: 0;
  font-family: sans-serif;
  height: 100vh;
  background: url('https://images.unsplash.com/photo-1549921296-3a6b93e4f4f6?auto=format&fit=crop&w=1950&q=80') no-repeat center center fixed;
  background-size: cover;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  text-shadow: 0 2px 4px rgba(0,0,0,0.6);
}

.content {
  text-align: center;
}

h1 {
  font-size: 4rem;
  margin-bottom: 1rem;
}

a {
  font-size: 1.5rem;
  color: white;
  text-decoration: none;
  border-bottom: 1px solid white;
}

a:hover {
  opacity: 0.8;
}