body {
  font-family: sans-serif;
  background-color: #f9f9f9;
  color: #333;
  margin: 0;
  padding: 0;
}
header {
  background-color: #005baa;
  color: white;
  padding: 20px;
  text-align: center;
}
nav {
  background-color: #eee;
  padding: 10px;
  text-align: center;
}
nav a {
  margin: 0 15px;
  color: #005baa;
  font-weight: bold;
  text-decoration: none;
}
.maintenance {
  background-color: #fff3cd;
  color: #856404;
  padding: 50px 20px;
  text-align: center;
  font-size: 1.6em;
  font-weight: bold;
  margin: 50px auto;
  max-width: 600px;
  border: 2px dashed #f0ad4e;
  border-radius: 10px;
}
footer {
  background-color: #eee;
  text-align: center;
  padding: 15px;
  font-size: 0.9em;
}