body {
  background-color: #f0f9f7;
  color: #333;
  font-family: Arial, sans-serif;
  margin: 10px;
}

h1 {
  text-align: center;
}

nav {
  text-align: center;
  margin: 15px 0;
}

footer {
  text-align: center;
  margin-top: 30px;
}

.center-figure {
  text-align: center;
}