body {
  font-family: Arial, sans-serif;
  margin: 0;
  background: #0f172a;
  color: #e2e8f0;
}

header {
  background: #1e293b;
  text-align: center;
  padding: 20px;
}

h1 {
  margin: 0;
}

main {
  max-width: 900px;
  margin: auto;
  padding: 20px;
}

section {
  background: #1e293b;
  padding: 15px;
  margin-bottom: 15px;
  border-radius: 10px;
}

a {
  color: #38bdf8;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

footer {
  text-align: center;
  padding: 15px;
  background: #1e293b;
}