body {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  margin: 0;
  padding: 0;
  background: #f4f4f4;
  color: #333;
}

header, footer {
  background: #222;
  color: #fff;
  padding: 20px 0;
  text-align: center;
}

main {
  max-width: 800px;
  margin: 20px auto;
  padding: 0 20px;
}

h1, h2 {
  color: #444;
}

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