body {
  font-family: Arial, sans-serif;
  margin: 0;
  line-height: 1.6;
  color: #222;
}

header {
  padding: 60px 20px;
  background: #0b2545;
  color: #fff;
  text-align: center;
}

header a {
  display: inline-block;
  margin-top: 20px;
  padding: 12px 24px;
  background: #f4a261;
  color: #000;
  text-decoration: none;
  border-radius: 6px;
  font-weight: bold;
}

main {
  max-width: 900px;
  margin: 0 auto;
  padding: 40px 20px;
}

footer {
  padding: 20px;
  text-align: center;
  background: #f4f4f4;
}