body {
  background-color: black;
  color: red;
  font-family: 'Courier New', Courier, monospace;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  height: 100vh;
  margin: 0;
}
nav {
  margin-bottom: 20px;
}
nav a {
  color: red;
  text-decoration: none;
  margin: 0 10px;
}
nav a:hover {
  text-decoration: underline;
}
section {
  margin: 20px 0;
  text-align: center;
}
h1 {
  font-size: 2em;
}