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

header, footer {
  background: #0b2a3d;
  color: #fff;
  padding: 15px 20px;
}

header h1 {
  margin: 0;
  font-size: 22px;
}

nav a {
  color: #fff;
  margin-right: 15px;
  text-decoration: none;
  font-size: 14px;
}

.container {
  max-width: 1000px;
  margin: auto;
  padding: 30px 20px;
}

h2 {
  color: #0b2a3d;
}

.btn {
  display: inline-block;
  background: #0b2a3d;
  color: #fff;
  padding: 10px 18px;
  text-decoration: none;
  margin-top: 10px;
}

footer {
  text-align: center;
  font-size: 13px;
}