*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-size: 1rem;
  line-height: 1.6;
  color: #222;
  background: #fff;
  padding: 2rem 1.5rem;
}

main {
  max-width: 700px;
  margin: 0 auto;
}

h1 { font-size: 2rem; margin-bottom: 1rem; }
p  { margin-bottom: 1rem; }
a  { color: #0066cc; }

footer {
  max-width: 700px;
  margin: 3rem auto 0;
  padding-top: 1.5rem;
  border-top: 1px solid #eee;
  font-size: 0.875rem;
  color: #666;
}