#header {
  background: #003366;
  color: #fff;
  padding: 0.75rem 1.5rem;
}
#nav {
  background: #004488;
  padding: 0.4rem 1.5rem;
}
#nav a {
  color: #cce;
  margin-right: 1rem;
  font-size: 0.9rem;
}
#footer {
  background: #f0f0f0;
  border-top: 1px solid #ccc;
  padding: 1rem 1.5rem;
  font-size: 0.8rem;
  color: #777;
}
#content {
  padding: 1.5rem;
}
#breadcrumb {
  font-size: 0.8rem;
  color: #888;
  margin-bottom: 1rem;
}
#sidebar {
  background: #f9f9f9;
  border: 1px solid #ddd;
  padding: 1rem;
  font-size: 0.9rem;
}