body {
  margin: 0;
  font-family: Arial, sans-serif;
  line-height: 1.6;
  background: #fdfdfd;
  color: #333;
}
header {
  background: linear-gradient(135deg, #009688, #4caf50);
  color: white;
  padding: 2rem;
  text-align: center;
}
header h1 {
  margin: 0;
  font-size: 2.5rem;
}
header p {
  margin: 0.5rem 0 0;
  font-size: 1.2rem;
}
nav {
  background: #333;
  padding: 0.5rem;
  text-align: center;
}
nav a {
  color: white;
  margin: 0 1rem;
  text-decoration: none;
  font-weight: bold;
}
nav a:hover {
  color: #4caf50;
}
section {
  padding: 2rem;
  max-width: 1000px;
  margin: auto;
}
.products {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
}
.card {
  background: white;
  border: 1px solid #ddd;
  border-radius: 8px;
  padding: 1.5rem;
  text-align: center;
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}
.card h3 {
  margin: 0.5rem 0;
}
footer {
  background: #333;
  color: white;
  text-align: center;
  padding: 1.5rem;
  margin-top: 2rem;
}
footer a {
  color: #4caf50;
  text-decoration: none;
}