body {
  font-family: Arial, sans-serif;
  max-width: 900px;
  margin: auto;
  padding: 40px;
  background: #f9f9f9;
  color: #333;
}

header {
  margin-bottom: 40px;
}

a {
  margin-right: 15px;
  text-decoration: none;
  color: #007acc;
}