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

header {
    background-color: #333;
    color: white;
    padding: 1rem 0;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 2rem;
}

nav ul {
    list-style: none;
    display: flex;
    margin: 0;
    padding: 0;
}

nav ul li {
    margin-left: 2rem;
}

nav ul li a {
    color: white;
    text-decoration: none;
}

main {
    padding: 2rem;
}

section {
    margin-bottom: 2rem;
}

.product-list {
    display: flex;
    flex-wrap: wrap;
}

.product {
    margin: 1rem;
    padding: 1rem;
    border: 1px solid #ccc;
    width: calc(33% - 2rem);
    box-sizing: border-box;
}

.product img {
    max-width: 100%;
}

footer {
    background-color: #333;
    color: white;
    text-align: center;
    padding: 1rem 0;
}