body {
  font-family: sans-serif;
  background: #f5f5f5;
  color: #333;
  padding: 2rem;
}
.container {
  max-width: 800px;
  background: #fff;
  padding: 2rem;
  margin: auto;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}
h1, h2 {
  color: #222;
}
section {
  margin-top: 2rem;
}