body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(to bottom, #f0f4f8, #dce7f3);
  margin: 0;
  padding: 0;
  color: #333;
}

header {
  background: #111;
  color: #fff;
  text-align: center;
}

header h1 {
  margin: 0;
}

header p {
  font-size: 1.1em;
  color: #bbb;
}

nav {
  text-align: center;
  margin-top: 10px;
  font-size: 0.9em;
}

nav a {
  margin: 0 10px;
  color: #0070f3;
  text-decoration: underline;
}