#oct-banner .button {
    width: 14.8%;
    height: 13%;
    bottom: 13.7%;
    text-indent: -9999px;
}
@media screen and (max-width: 767px) {
    #oct-banner .button {
        width: 53.7%;
        height: 10.5%;
        bottom: 35%;
    }
}