body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
}

header {
    background-color: #333;
    color: #fff;
    padding: 1rem;
}

nav a {
    color: #fff;
    text-decoration: none;
    margin-right: 1rem;
}

main {
    padding: 2rem;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.product-card {
    border: 1px solid #ddd;
    padding: 1rem;
    text-align: center;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th, td {
    border: 1px solid #ddd;
    padding: 0.5rem;
    text-align: left;
}

button {
    background-color: #333;
    color: #fff;
    border: none;
    padding: 0.5rem 1rem;
    cursor: pointer;
}