body {
    background-color: black;
}

.imagen {
    display: block;
    margin-left: auto;
    margin-right: auto;
    width: 50%;
}

.sponsor {
    position: fixed;
    left: 0;
    bottom: 0;
    width: 100%;
    color: rgb(255, 0, 0);
    font-size: large;
    font-family: Arial, Helvetica, sans-serif;
    text-align: center;
}