#may-banner .button {
    width: 15.7%;
    left: 42.2%;
    height: 15%;
    bottom: 12%;
    text-indent: -9999px;
}
@media screen and (max-width: 767px) {
    #may-banner .button {
        width: 35.7%;
        left: 32.2%;
        height: 10%;
        bottom: 30%;
    }
}