body {
  font-family: Arial, sans-serif;
  max-width: 800px;
  margin: auto;
  padding: 20px;
  line-height: 1.6;
}

header {
  text-align: center;
  margin-bottom: 40px;
}

article {
  margin-bottom: 30px;
}

a {
  text-decoration: none;
  color: #0077cc;
}