#dec-banner span.button {
    text-indent: -9999px;
    width: 11.7%;
    height: 10.9%;
    left: 28.2%;
    bottom: 8.5%;
}
@media screen and (max-width: 767px) {
    #dec-banner span.button {
        width: 46.8%;
        height: 7.4%;
        left: 29.3%;
        bottom: 41.5%;
    }
}