body {
  font-family: sans-serif;
  max-width: 800px;
  margin: 0 auto;
  padding: 20px;
  background-color: #fdfdfd;
  color: #333;
}
header, footer {
  text-align: center;
  margin-bottom: 2em;
}
nav {
  text-align: center;
  margin-bottom: 2em;
}
nav a {
  margin: 0 10px;
  text-decoration: none;
  color: #0066cc;
}
h1, h2 {
  color: #003366;
}
ul {
  list-style-type: square;
}
a {
  color: #003366;
}