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

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

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

section {
  margin-bottom: 40px;
}

h1, h2 {
  color: #111;
}

a {
  color: #0066cc;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}