body {
  margin: 0;
  font-family: Helvetica, Arial, sans-serif;
  background: #f6f7fb;
  color: #222;
}
header {
  background: #111;
  color: #fff;
  padding: 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
header h1 {
  margin: 0;
  font-size: 1.5rem;
}
header nav a {
  color: #fff;
  text-decoration: none;
  margin-left: 1rem;
}
.hero {
  padding: 3rem 1rem;
  text-align: center;
}
.cta {
  display: inline-block;
  margin-top: 1rem;
  padding: 0.75rem 1.5rem;
  background: #006aff;
  color: #fff;
  border-radius: 6px;
  text-decoration: none;
}
.product {
  padding: 2rem 1rem;
  max-width: 600px;
  margin: 0 auto;
  text-align: center;
}
.price {
  font-size: 1.25rem;
  font-weight: bold;
  margin: 0.5rem 0;
}
footer {
  text-align: center;
  padding: 1.5rem 0;
  background: #fff;
  margin-top: 2rem;
  font-size: 0.875rem;
  border-top: 1px solid #eee;
}