* {
    box-sizing: border-box;
  }
  
  body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background: #f4f4f4;
  }
  
  header {
    background: #222;
    color: #fff;
    padding: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
  }
  
  .product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    padding: 20px;
  }
  
  .product {
    background: #fff;
    padding: 1rem;
    border-radius: 8px;
    text-align: center;
    box-shadow: 0 0 5px rgba(0,0,0,0.1);
  }
  
  .product img {
    max-width: 100%;
    height: auto;
    border-radius: 4px;
  }
  
  button {
    padding: 0.5rem 1rem;
    background: #28a745;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    margin-top: 10px;
  }
  
  button:hover {
    background: #218838;
  }
  
  .cart {
    font-size: 1.1rem;
  }