body {
    margin-top: 4rem;
    background-color: rgba(128, 128, 128, 0);
    /* background-image: url('https://xatimg.com/image/zdWRpKrvg92E.png'); */
    /* background-image: url('https://i.postimg.cc/Bvjt6MmN/pngegg.png'); */
    display: flex;
    overflow: hidden;
    margin: 0;

}

/* button {
    background-color: rgba(255, 0, 0, 0);
    border: 0;
}
 */

#fondo {
    width: 100%;
    height: 100%;
}