body {
    background: url('../img/bg.png') no-repeat center center fixed;
    background-size: cover;
    background-attachment: fixed;
    color: rgb(3, 3, 3);
    margin: 0;
    padding: 0;
    font-family: sans-serif;
}

/* Encabezados */
h1, h2, h3 {
    color: #fff;
    margin-bottom: 20px;
}

/* Enlaces blancos con hover rojo */
a {
    color: #fff;
    text-decoration: none;
}