body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background: #fff8f0;
    color: #333;
}
header {
    background: #8B0000;
    color: #fff;
    padding: 20px;
    text-align: center;
}
nav a {
    margin: 0 15px;
    color: #fff;
    text-decoration: none;
}
.intro {
    text-align: center;
    padding: 40px 20px;
}
.catalog {
    padding: 20px;
    text-align: center;
}
.product {
    background: #f5f5f5;
    margin: 20px auto;
    padding: 20px;
    border-radius: 8px;
    width: 80%;
    max-width: 400px;
}
footer {
    background: #8B0000;
    color: #fff;
    text-align: center;
    padding: 20px;
}