body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  line-height: 1.6;
  color: #333;
}

header {
  background: #0f172a;
  color: #fff;
  padding: 40px 20px;
  text-align: center;
}

main {
  padding: 20px;
  max-width: 1100px;
  margin: auto;
}

section {
  margin-bottom: 30px;
}

h1, h2 {
  color: #0f172a;
}

footer {
  background: #f4f4f4;
  text-align: center;
  padding: 15px;
  font-size: 14px;
}