* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Arial, sans-serif;
}

body {
    background-color: #f5f5f5;
    color: #333;
}

header {
    background: #222;
    color: white;
    padding: 30px;
    text-align: center;
}

.catalogo {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    padding: 30px;
}

.producto {
    background: white;
    border-radius: 10px;
    padding: 15px;
    text-align: center;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}

.producto img {
    width: 100%;
    border-radius: 10px;
}

.producto h2 {
    margin: 10px 0;
}

.precio {
    font-size: 18px;
    color: #27ae60;
    font-weight: bold;
}

footer {
    background: #222;
    color: white;
    text-align: center;
    padding: 20px;
}

.btn {
    display: inline-block;
    margin-top: 10px;
    padding: 10px 20px;
    background: #25d366;
    color: white;
    text-decoration: none;
    border-radius: 5px;
}