body {
  margin: 0;
  padding: 0;
  font-family: 'Segoe UI', sans-serif;
  background: #000;
  color: #39ff14;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100vh;
}
h1 {
  font-size: 3em;
  margin: 0.2em;
}
p {
  font-size: 1.5em;
}
nav {
  margin-top: 2em;
}
nav a {
  color: #0ff;
  text-decoration: none;
  margin: 0 1em;
  font-size: 1.2em;
}
nav a:hover {
  color: #fff;
}