body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
}
header {
    background-color: #222;
    color: #fff;
    padding: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.logo {
    font-size: 1.5rem;
}
.nav ul {
    list-style: none;
    display: flex;
    gap: 1rem;
}
.nav ul li a {
    color: white;
    text-decoration: none;
}
.hamburger {
    display: none;
    cursor: pointer;
}
.hero {
    padding: 2rem;
    background-color: #f4f4f4;
    text-align: center;
}
.product-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    padding: 1rem;
}
.product-card {
    flex: 1 1 calc(33% - 2rem);
    background: #eee;
    padding: 1rem;
    text-align: center;
}
footer {
    background: #222;
    color: #fff;
    text-align: center;
    padding: 1rem;
    margin-top: 2rem;
}
@media (max-width: 768px) {
    .nav ul {
        flex-direction: column;
        display: none;
    }
    .hamburger {
        display: block;
    }
}