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

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

nav ul {
    list-style: none;
    display: flex;
    justify-content: center;
    padding: 0;
}

nav ul li {
    margin: 0 1rem;
}

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

main {
    padding: 2rem;
}

.product-detail {
    max-width: 800px;
    margin: 0 auto;
}

.product-detail img {
    width: 100%;
    height: auto;
    margin-bottom: 1rem;
}

.product-detail h1 {
    margin-top: 0;
}

.description {
    margin-bottom: 2rem;
}

.description-images {
    display: flex;
    justify-content: space-between;
}

.description-images img {
    width: 48%;
    height: auto;
}

.back-button {
    display: inline-block;
    margin-top: 1rem;
    padding: 0.5rem 1rem;
    background: #333;
    color: #fff;
    text-decoration: none;
    border-radius: 5px;
}

.back-button:hover {
    background: #555;
}

footer {
    background: #333;
    color: #fff;
    text-align: center;
    padding: 1rem 0;
    position: absolute;
    bottom: 0;
    width: 100%;
}