body {
  margin: 0;
  font-family: Arial;
  background: #f4f4f4;
}

header {
  background: black;
  color: white;
  text-align: center;
  padding: 20px;
}

.hero {
  padding: 40px;
  background: white;
  text-align: center;
}

.btn {
  background: orange;
  color: white;
  padding: 12px 20px;
  text-decoration: none;
  border-radius: 5px;
}

section {
  padding: 40px;
}

.product {
  background: white;
  padding: 20px;
  margin: 10px 0;
}

.price {
  font-size: 28px;
  font-weight: bold