body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background: #f4f4f4;
}

header {
    background: #000;
    color: #fff;
    padding: 15px;
    text-align: center;
}

header h1 {
    margin: 0;
}

.btn-instagram {
    display: inline-block;
    background: #e4405f;
    color: #fff;
    padding: 8px 15px;
    margin-top: 10px;
    text-decoration: none;
    border-radius: 5px;
}

.banner {
    background: #0077cc;
    color: #fff;
    text-align: center;
    padding: 20px;
}

.produtos {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    padding: 20px;
}

.produto {
    background: white;
    border-radius: 8px;
    margin: 10px;
    padding: 15px;
    width: 220px;
    text-align: center;
    box-shadow: 0 0 5px rgba(0,0,0,0.1);
}

.produto img {
    max-width: 100%;
    height: auto;
}

.preco {
    font-size: 18px;
    color: green;
}

.btn-comprar {
    display: block;
    background: #28a745;
    color: white;
    padding: 10px;
    margin-top: 10px;
    text-decoration: none;
    border-radius: 5px;
}

.btn-comprar:hover {
    background: #218838;
}

footer {
    text-align: center;
    background: #000;
    color: #fff;
    padding: 15px;
    margin-top: 20px;
}