body {
    font-family: Arial, sans-serif;
    margin: 20px;
    background: #f8f8f8;
}

h1 {
    color: #333;
}

.lista {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 15px;
}

.manual {
    background: white;
    padding: 15px;
    border-radius: 8px;
    box-shadow: 0 0 5px rgba(0,0,0,0.1);
}

.manual a {
    display: inline-block;
    margin-top: 10px;
    color: white;
    background: #0077cc;
    padding: 8px 12px;
    border-radius: 5px;
    text-decoration: none;
}