body {
  margin: 0;
  font-family: Arial, sans-serif;
}

header {
  background-image: url("stars.jpg");
  background-size: cover;
  background-position: center;
  color: white;
  text-align: center;
  padding: 60px 20px;
}

.content {
  display: flex;
  align-items: stretch;
  min-height: 300px;
}

nav {
  width: 25%;
  background-color: #009999;
  padding: 20px;
}

nav ul {
  list-style-type: none;
  padding: 0;
}

nav li {
  margin-bottom: 10px;
}

nav a {
  text-decoration: none;
  color: white;
  font-weight: bold;
}

nav a:hover {
  text-decoration: underline;
}

main {
  width: 75%;
  background-color: white;
  padding: 20px;
}

footer {
  display: flex;
  justify-content: space-around;
  background-color: #add8e6;
  padding: 20px 10px;
}

.footer-section {
  width: 30%;
}

.footer-section h3 {
  margin-top: 0;
}

.bottom-footer {
  background-color: #003366;
  color: white;
  text-align: center;
  padding: 10px;
}