body {
  font-family: Arial, sans-serif;
  margin: 0;
  background-color: #f9f9f9;
  color: #333;
}

header {
  background: #4CAF50;
  color: white;
  text-align: center;
  padding: 1.5em 0;
}

nav {
  background: #333;
  display: flex;
  justify-content: center;
}

nav a {
  color: white;
  padding: 0.8em 1.2em;
  text-decoration: none;
}

nav a:hover {
  background: #575757;
}

main {
  max-width: 1000px;
  margin: 2em auto;
  padding: 1em;
  background: white;
  border-radius: 8px;
  box-shadow: 0 0 10px rgba(0,0,0,0.05);
}

.product-list {
  display: flex;
  flex-wrap: wrap;
  gap: 2em;
}

.product-card {
  background: #fff;
  border-radius: 8px;
  box-shadow: 0 0 10px rgba(0,0,0,0.05);
  padding: 1em;
  width: calc(33% - 2em);
  text-align: center;
}

.product-card img {
  max-width: 100%;
  border-radius: 8px;
}

.price {
  font-size: 1.2em;
  color: #e53935;
  margin: 0.5em 0;
}

.btn {
  background: #4CAF50;
  color: white;
  padding: 0.6em 1.2em;
  text-decoration: none;
  border-radius: 5px;
  font-size: 1em;
}

.btn:hover {
  background: #45a049;
}

footer {
  background: #333;
  color: white;
  text-align: center;
  padding: 1em 0;
  margin-top: 2em;
}