body {
  font-family: sans-serif;
  text-align: center;
  background: #f5f5f5;
}

h1 {
  margin-top: 50px;
}

.menu a {
  display: block;
  margin: 20px auto;
  padding: 20px;
  width: 300px;
  background: #4CAF50;
  color: white;
  text-decoration: none;
  border-radius: 10px;
  font-size: 20px;
}