body {
  margin: 0;
  font-family: Arial, sans-serif;
  background-color: #0f172a;
  color: #e5e7eb;
}

header {
  background-color: #020617;
  padding: 20px;
  text-align: center;
}

header h1 {
  margin: 0;
  color: #38bdf8;
}

nav {
  margin-top: 10px;
}

nav a {
  color: #e5e7eb;
  margin: 0 10px;
  text-decoration: none;
  font-weight: bold;
}

nav a:hover {
  color: #38bdf8;
}

section {
  max-width: 800px;
  margin: 60px auto;
  padding: 0 20px;
}

section h2 {
  color: #38bdf8;
  border-bottom: 2px solid #38bdf8;
  padding-bottom: 5px;
}

footer {
  background-color: #020617;
  text-align: center;
  padding: 15px;
  font-size: 0.9em;
  color: #94a3b8;
}